# A082426 (b-file synthesized from sequence entry) 1 1 2 3 3 10 4 49 5 301 6 2161 7 17641 8 161281 9 1632961 10 18144001 11 219542401 12 2874009601 13 40475635201 14 610248038401 15 9807557760001 16 167382319104001 17 3023343138816001 18 57621363351552001 19 1155628453883904001 20 24329020081766400001