# A355987 (b-file synthesized from sequence entry)
1 1
2 3
3 13
4 61
5 421
6 2641
7 23521
8 203281
9 2071441
10 22407841
11 286403041
12 3453468481
13 51122111041
14 759194916481
15 12216117513601
16 203300293996801
17 3811792426041601
18 69634723878720001
19 1444704854104512001
20 29725332567567436801
21 658231789483184716801