# A074651 (b-file synthesized from sequence entry)
1 6
2 42
3 558
4 8640
5 151350
6 2858562
7 57010422
8 1183184640
9 25319269980
10 555099603450
11 12411545042094
12 282060978777792
13 6498315236374338
14 151469476107975354
15 3566331985691591550
16 84709091524784348160