# A195531 (b-file synthesized from sequence entry)
1 5
2 17
3 65
4 241
5 901
6 3361
7 12545
8 46817
9 174725
10 652081
11 2433601
12 9082321
13 33895685
14 126500417
15 472105985
16 1761923521
17 6575588101
18 24540428881
19 91586127425
20 341804080817
21 1275630195845
22 4760716702561
23 17767236614401
24 66308229755041