# A187116 (b-file synthesized from sequence entry)
2 1
3 4
4 20
5 138
6 1258
7 14476
8 202655
9 3354848
10 64246776
11 1398909332
12 34157026526
13 924757926320
14 27503093599024
15 891534666547216
16 31289986924954924
17 1182213869836721036
18 47846600590876178320
19 2065282617724684345208