# A258798 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 62
4 327
5 1851
6 10802
7 64440
8 391218
9 2408001
10 14989608
11 94197594
12 596756374
13 3807010920
14 24435261432
15 157681777148
16 1022391454116
17 6657413851086
18 43517229086467
19 285447137446989
20 1878287880309900
21 12395149957521672
22 82014499806039711