# A074519 (b-file synthesized from sequence entry)
0 3
1 15
2 107
3 855
4 7187
5 62175
6 547067
7 4861095
8 43437347
9 389373615
10 3496550027
11 31429887735
12 282673677107
13 2543086531455
14 22882895970587
15 205921649672775
16 1853172776742467
17 16677944639119695
18 150098449994264747