# A027213 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 27
4 92
5 440
6 1556
7 7514
8 27082
9 130883
10 477258
11 2303413
12 8465592
13 40783083
14 150735628
15 724837891
16 2690363900
17 12915186640
18 48093650016
19 230526280814
20 860654319126
21 4119854160332
22 15413262342946
23 73695109608352
24 276180051478904
25 1319136935150530
26 4950605267226796