# A149439 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 46
5 182
6 725
7 2951
8 12485
9 52914
10 228114
11 995861
12 4367993
13 19347215
14 86182865
15 385719242
16 1735798572
17 7840344400
18 35542086947
19 161680035938
20 737477049496
21 3372996347659
22 15464230147748
23 71048806870133
24 327090119058407
25 1508565989145332
26 6969253711843239
27 32247071574102585