# A147727 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 16
5 54
6 232
7 936
8 3880
9 17302
10 81584
11 409012
12 2169742
13 11998726
14 69653068
15 426511054
16 2718410098
17 18114464012