# A037721 (b-file synthesized from sequence entry)
1 2
2 18
3 163
4 1470
5 13232
6 119088
7 1071793
8 9646140
9 86815262
10 781337358
11 7032036223
12 63288326010
13 569594934092
14 5126354406828
15 46137189661453
16 415234706953080
17 3737112362577722