# A116904 (b-file synthesized from sequence entry)
0 1
1 5
2 21
3 93
4 409
5 1853
6 8333
7 37965
8 172265
9 787557
10 3593465
11 16477845
12 75481105
13 346960613
14 1593924045
15 7341070889
16 33798930541
17 155915787353
18 719101961769
19 3321659652529
20 15341586477457
21 70944927549085
22 328054694768261
23 1518490945278377
24 7028570356547189
25 32560476643826933
26 150838831585499069