# A009167 (b-file synthesized from sequence entry)
0 1
1 1
2 21
3 717
4 38857
5 3158329
6 363525789
7 56250039237
8 11210469917713
9 2783865475754737
10 840008000833503141
11 302092032859131150141
12 127513257396264637784281
13 62381091849825754078253353