# A149904 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 47
5 163
6 596
7 2243
8 8806
9 34773
10 140415
11 576389
12 2397200
13 10036112
14 42517170
15 181694092
16 781065217
17 3376828207
18 14701304614
19 64311598022
20 282420505486
21 1245793366982
22 5518688704385
23 24521587743488
24 109288995450409
25 488683965129030
26 2191109757849930
27 9846596587883443