# A122778 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 22
4 285
5 5656
6 158095
7 5881968
8 279768825
9 16507789696
10 1180490926131
11 100415158796800
12 10005244013129365
13 1152844128057793536
14 151949197139815794615
15 22696027820066041133056
16 3810644613584486281328625