# A034172 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 75
5 541
6 4683
7 47293
8 545835
9 7087261
10 102247563
11 1622632573
12 28091567595
13 526858348381
14 10641342970443
15 230283190977853
16 5315654681981355
17 130370767029135900
18 3385534663256845326