# A115457 (b-file synthesized from sequence entry)
0 1
1 6
2 35
3 694
4 26089
5 1862994
6 253247715
7 66799608630
8 34698378752226
9 35781375988234520
10 73534241823793715433
11 301714422751259316744750
12 2473763407036784492590791565
13 40547483778956508623734286010210