# A141372 (b-file synthesized from sequence entry)
1 1
2 1
3 6
4 57
5 684
6 9512
7 146848
8 2455208
9 43764802
10 822963750
11 16203122280
12 332189276516
13 7062047285812
14 155178233311932
15 3515420453148936
16 81936668615592785
17 1961578144170589430
18 48167700575393576406