# A012124 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 24
4 1744
5 61504
6 6700992
7 632723584
8 106726576384
9 19137224693760
10 4819549055104000
11 1376115921056118784
12 493566558620424622080
13 203121814961910275620864
14 99267625002820837091098624