# A007028 (b-file synthesized from sequence entry)
8 1
9 0
10 1
11 1
12 5
13 5
14 21
15 40
16 176
17 500
18 2053
19 7532
20 31206
21 124552
22 521332
23 2167599
24 9183879
25 38965327
26 166956753
27 718004565
28 3107450143
29 13502835176
30 58956369552
31 258398671525