# A047027 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 28
4 95
5 331
6 1169
7 4234
8 15533
9 57410
10 214396
11 806324
12 3046963
13 11575473
14 44163245
15 169039223
16 649096030
17 2499407973
18 9646255701
19 37309138495
20 144580572524
21 561217993364
22 2181849519347
23 8494360042301
24 33111979073980