# A045635 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 9
5 57
6 315
7 1629
8 8127
9 39718
10 191754
11 919035
12 4385799
13 20879100
14 99276840
15 471848195
16 2242864575
17 10665998760
18 50757180840
19 241743946635
20 1152434818755
21 5499250360025
22 26268118117731
23 125602004765391