# A037796 (b-file synthesized from sequence entry) 1 3 2 23 3 162 4 1134 5 7941 6 55589 7 389124 8 2723868 9 19067079 10 133469555 11 934286886 12 6540008202 13 45780057417 14 320460401921 15 2243222813448 16 15702559694136 17 109917917858955 18 769425425012687 19 5385977975088810