# A037759 (b-file synthesized from sequence entry)
1 3
2 15
3 76
4 382
5 1913
6 9565
7 47826
8 239132
9 1195663
10 5978315
11 29891576
12 149457882
13 747289413
14 3736447065
15 18682235326
16 93411176632
17 467055883163
18 2335279415815
19 11676397079076
20 58381985395382
21 291909926976913