# A137157 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 24
4 239
5 4920
6 206727
7 17568408
8 3003763243
9 1030272816360
10 707851744149198
11 973425618916674288
12 2678332881795756783639
13 14741522294008025924154864
14 162290544340043699103996962253
15 3573515596966915773419766367302288
16 157376160486791180710467411977740266927