Simplify the following text for a Grade 8 native English-speaking person.
Original: Besides integer sequences , the OEIS also catalogs sequences of fractions , the digits of transcendental numbers , complex numbers and so on by transforming them into integer sequences .
Simplified: The On-Line Encyclopedia of Integer Sequences ( OEIS ) , also known as Sloane 's , is an large searchable database . It is on the Web , and it contains number sequences . .