# A062960 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 16
4 65
5 576
6 2275
7 27840
8 78489
9 236800
10 767151
11 13264560
12 31184725
13 640564848
14 2082421125
15 5514535936
16 10924376001
17 279876280320
18 584912713825
19 16888996800000
20 37538691697521
21 91766133606400
22 272224952406045
23 9248286151802880
24 17279191734765625