# A046637 (b-file synthesized from sequence entry)
0 1
1 3
2 21
3 169
4 1515
5 13629
6 122641
7 1103763
8 9933861
9 89404729
10 804642555
11 7241782989
12 65176046881
13 586584421923
14 5279259797301
15 47513338175689
16 427620043581195
17 3848580392230749
18 34637223530076721
19 311735011770690483