# A055900 (b-file synthesized from sequence entry)
4 1
5 9
6 51
7 209
8 696
9 1980
10 5000
11 11475
12 24375
13 48545
14 91581
15 164934
16 285376
17 476784
18 772416
19 1217610
20 1873125
21 2819025
22 4159375
23 6027615
24 8592936
25 12067484
26 16714776
27 22859109
28 30896411
29 41306265
30 54665625
31 71663900