# A370611 (b-file synthesized from sequence entry)
2 1
3 1
4 225
5 4
6 38025
7 751689
8 10323369
9 355624164
10 9814072356
11 279740499025
12 8706730814089
13 86847500601
14 11027486960232964
15 435408094460869201
16 18362780530794065025
17 2492638430009890761
18 39207739576969100808801
19 1972312183619434816475625
20 104566626183621314286288961
21 13215338757299095309775089