# A001625 (b-file synthesized from sequence entry)
2 2
3 4
4 60
5 1276
6 41888
7 1916064
8 116522048
9 9069595840
10 878460379392
11 103547791177216
12 14588580791234048
13 2420219602973093376
14 466877775127725240320
15 103607067936116866084864
16 26204424894484840874483712