# A003765 (b-file synthesized from sequence entry)
1 1
2 10
3 46
4 238
5 1170
6 5882
7 29278
8 146382
9 730434
10 3647994
11 18212046
12 90936494
13 454029874
14 2266968122
15 11318785790
16 56514147406
17 282171551586
18 1408866513082
19 7034386262766
20 35122279177902