Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Tie no | Home team | Score | Away team | Attendance |
| --- | --- | --- | --- | --- |
| 1 | Darlington | 1 – 1 | Northampton Town | 2,964 |
| replay | Northampton Town | 2 – 1 | Darlington | 2,895 |
| 2 | Hampton & Richmond Borough | 0 – 3 | Dagenham & Redbridge | 2,252 |
| 3 | Torquay United | 4 – 1 | Yeovil Town | 3,718 |
| 4 | Leyton Orient | 1 – 1 | Bristol Rovers | 3,157 |
| replay | Bristol Rovers | 3 – 3 | Leyton Orient | 3,742 |
| Bristol Rovers won 6 – 5 on penalties | Bristol Rovers won 6 – 5 on penalties | Bristol Rovers won 6 – 5 on penalties | Bristol Rovers won 6 – 5 on penalties | Bristol Rovers won 6 – 5 on penalties |
| 5 | Bury | 4 – 1 | Workington | 2,641 |
| 6 | Barnet | 2 – 1 | Gillingham | 2,843 |
| 7 | Accrington Stanley | 2 – 3 | Huddersfield Town | 2,202 |
| 8 | Barrow | 1 – 1 | Bournemouth | 2,203 |
| replay | Bournemouth | 3 – 2 | Barrow | 2,969 |
| 9 | Forest Green Rovers | 2 – 2 | Rotherham United | 2,102 |
| replay | Rotherham United | 0 – 3 | Forest Green Rovers | 2,754 |
| 10 | Southend United | 2 – 1 | Rochdale | 5,180 |
| 11 | Team Bath | 0 – 2 | Chasetown | 2,067 |
| 12 | Bradford City | 1 – 0 | Chester City | 4,069 |
| 13 | Morecambe | 0 – 2 | Port Vale | 2,730 |
| 14 | Hereford United | 0 – 0 | Leeds United | 5,924 |
| replay | Leeds United | 0 – 1 | Hereford United | 11,315 |
| 15 | Mansfield Town | 3 – 0 | Lewes | 2,607 |
| 16 | Gainsborough Trinity | 0 – 6 | Hartlepool United | 2,402 |
| 17 | Exeter City | 4 – 0 | Stevenage Borough | 3,513 |
| 18 | Oldham Athletic | 2 – 2 | Doncaster Rovers | 4,280 |
| replay | Doncaster Rovers | 1 – 2 | Oldham Athletic | 4,340 |
| 19 | Peterborough United | 4 – 1 | Wrexham | 4,266 |
| 20 | Halifax Town | 0 – 4 | Burton Albion | 1,936 |
| 21 | York City | 0 – 1 | Havant & Waterlooville | 2,001 |
| 22 | Harrogate Railway | 2 – 0 | Droylsden | 884 |
| 23 | Rushden & Diamonds | 3 – 1 | Macclesfield Town | 1,759 |
| 24 | Ware | 0 – 2 | Kidderminster Harriers | 2,123 |
| 25 | Walsall | 2 – 0 | Shrewsbury Town | 4,972 |
| 26 | Horsham | 4 – 1 | Maidenhead United | 3,379 |
| 27 | Altrincham | 1 – 2 | Millwall | 2,457 |
| 28 | Cheltenham Town | 1 – 1 | Brighton & Hove Albion | 2,984 |
| replay | Brighton & Hove Albion | 2 – 1 | Cheltenham Town | 3,711 |
| 29 | Stockport County | 1 – 1 | Staines Town | 3,460 |
| replay | Staines Town | 1 – 1 | Stockport County | 2,860 |
| Staines Town won 4 – 3 on penalties | Staines Town won 4 – 3 on penalties | Staines Town won 4 – 3 on penalties | Staines Town won 4 – 3 on penalties | Staines Town won 4 – 3 on penalties |
| 30 | Crewe Alexandra | 2 – 1 | Milton Keynes Dons | 3,049 |
| 31 | Lincoln City | 1 – 1 | Nottingham Forest | 7,361 |
| replay | Nottingham Forest | 3 – 1 | Lincoln City | 6,783 |
| 32 | Cambridge United | 2 – 1 | Aldershot Town | 2,641 |
| 33 | Notts County | 3 – 0 | Histon | 4,344 |
| 34 | Oxford United | 3 – 1 | Northwich Victoria | 2,972 |
| 35 | Billericay Town | 1 – 2 | Swansea City | 2,334 |
| 36 | Carlisle United | 1 – 1 | Grimsby Town | 5,128 |
| replay | Grimsby Town | 1 – 0 | Carlisle United | 2,008 |
| 37 | Eastbourne Borough | 0 – 4 | Weymouth | 2,711 |
| 38 | Chesterfield | 1 – 2 | Tranmere Rovers | 4,296 |
| 39 | Wycombe Wanderers | 1 – 2 | Swindon Town | 3,332 |
| 40 | Luton Town | 1 – 1 | Brentford | 4,167 |
| replay | Brentford | 0 – 2 | Luton Town | 2,643 |
Question:
What is the tie number when the away team is Lewes?
Answer:
15.0