# A218298 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 37
4 274
5 2154
6 17896
7 153981
8 1361702
9 12297022
10 112935652
11 1051549970
12 9903781784
13 94183796404
14 903135799468
15 8722680673357
16 84776578857670
17 828531289070582
18 8137311780855076
19 80272417524869462
20 795011346686319212
21 7902010696389037900