# A217473 (b-file synthesized from sequence entry)
0 1
1 4
2 44
3 1276
4 96976
5 19298224
6 10054374704
7 13714167096256
8 48973290700730176
9 457851294761126415424
10 11206368290573330143917824
11 718092873691648422292110244096
12 120467978583384630972146706659789056