# A002838 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 12
5 32
6 94
7 289
8 910
9 2934
10 9686
11 32540
12 110780
13 381676
14 1328980
15 4669367
16 16535154
17 58965214
18 211591218
19 763535450
20 2769176514
21 10089240974
22 36912710568
23 135565151486
24 499619269774
25 1847267563742
26 6850369296298