# A054316 (b-file synthesized from sequence entry)
4 1
5 3
6 19
7 149
8 2578
9 84127
10 5201474
11 577043450
12 113371887160
13 39618007594177
14 24916462201698733
15 28563626901315427552
16 60366734333061918085970
17 237406975833857522512566844
18 1750330441805919888169149998870