# A012744 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 504
4 24384
5 2375296
6 338479232
7 64501554688
8 16130341302272
9 5112670099460096
10 2003580047549120512
11 951418445045046378496
12 538352433444301745848320
13 357916525207050277213175808