# A151469 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 55
5 224
6 1054
7 4855
8 23764
9 116491
10 587824
11 2988264
12 15439018
13 80389938
14 422931343
15 2240237896
16 11953324634
17 64141694737
18 346092872529
19 1876152637561
20 10215165278984
21 55833837924973
22 306268569253825
23 1685420531789073
24 9302712249561453
25 51486848030764303
26 285680988543516211