# A149228 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 46
5 146
6 696
7 2472
8 12001
9 45483
10 223022
11 881542
12 4348583
13 17699412
14 87646682
15 364484570
16 1809577040
17 7649804945
18 38047511026
19 162936769267
20 811426736660
21 3511428349970
22 17503203877425
23 76400925952003
24 381093314584880
25 1675546177429929
26 8362071716152935
27 36992673643317585