# A151137 (b-file synthesized from sequence entry)
0 1
1 3
2 11
3 46
4 202
5 918
6 4272
7 20146
8 96096
9 462150
10 2236092
11 10874695
12 53093518
13 260052412
14 1277167839
15 6286177214
16 30998213081
17 153099530722
18 757172956854
19 3749059996968
20 18581735924770
21 92178653535345
22 457622970937958
23 2273410063927890
24 11300723380227944
25 56203564918917070
26 279656667570882248