# A148750 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 27
5 91
6 401
7 1601
8 7423
9 32011
10 151937
11 683445
12 3289407
13 15195887
14 73826601
15 347300701
16 1698509579
17 8094184535
18 39775700609
19 191355999417
20 943683591813
21 4572456580749
22 22609674781031
23 110153525765667
24 545799821299537
25 2670545688893781
26 13253449653142241
27 65069191500414525