# A128085 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 8
4 46
5 340
6 3210
7 36336
8 484636
9 7394458
10 127707302
11 2454109404
12 52091631896
13 1207854671388
14 30431260261770
15 826657521349952
16 24114046688034516
17 751085176539860458
18 24899882719111953556