# A107319 (b-file synthesized from sequence entry)
0 1
1 63
2 1260
3 13860
4 103950
5 594594
6 2774772
7 11042460
8 38648610
9 121671550
10 350414064
11 935402832
12 2338507080
13 5521090680
14 12394285200
15 26606398896
16 54875697723
17 109181751525
18 210275965900
19 393175282500
20 715579014150
21 1270517841450
22 2205030964500
23 3747302149500