# A153988 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 2
4 2
5 4
6 7
7 7
8 19
9 30
10 41
11 111
12 242
13 341
14 1198
15 2798
16 5288
17 19451
18 58386
19 113037
20 552176
21 1717743
22 4407296
23 22107632
24 91701868
25 243757707
26 1626825070
27 6947686128
28 24465641567
29 168345671664
30 954487204861
31 3466462776895