# A149370 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 46
5 160
6 643
7 2575
8 10729
9 44624
10 190291
11 823169
12 3608545
13 15902256
14 70658022
15 316491884
16 1428784897
17 6481876262
18 29534326134
19 135186987516
20 621730458462
21 2870676877668
22 13296405107770
23 61766333479830
24 287795260731617
25 1344834924402010
26 6300001869005030
27 29577249454624618