Hydras

Hydras 
Regular Hydras
Type of Hydra 	
Heads By Stage 	Total
2-Headed Hydra 	2 + 4 	6
3-Headed Hydra 	3 + 6 + 12 	21
4-Headed Hydra 	4 + 8 + 16 + 32 	60
5-Headed Hydra 	5 + 10 + 20 + 40 + 80 	155
6-Headed Hydra 	6 + 12 + 24 + 48 + 96 + 192 	378
7-Headed Hydra 	7 + 14 + 28 + 56 + 112 + 224 + 448 	889
8-Headed Hydra 	8 + 16 + 32 + 64 + 128 + 256 + 512 + 1024 	2040
9-Headed Hydra 	9 + 18 + 36 + 72 + 144 + 288 + 576 + 1152 + 2304 	4599
10-Headed Hydra	10 + 20 + 40 + 80 + 160 + 320 + 640 + 1280 + 2560 + 5120 	10230
11-Headed Hydra	11 + 22 + 44 + 88 + 176 + 352 + 704 + 1408 + 2816 + 5632 + 11264	22517
12-Headed Hydra	12+ 24+ 48+ 96+ 192+ 384+ 768+ 1536+ 3072+ 6144+ 12288+ 24576 	49140
Cubic Hydras
Type of Hydra 	Heads By Stage 	Total
2-Headed Hydra	2 + 4 	6
3-Headed Hydra	3 + 9 + 27 	39
4-Headed Hydra	4 + 16 + 64 + 256 	340
5-Headed Hydra	5 + 25 + 125 + 625 + 3125 	3905
6-Headed Hydra	6 + 36 + 216 + 1296 + 7776 + 46656	55986