# A309472 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 9
4 160
5 2525
6 42336
7 788263
8 16454656
9 384154569
10 9963712000
11 284872585811
12 8910352429056
13 302794155321853
14 11110786329481216
15 437874275265339375
16 18446409309071343616
17 827234215200059132177
18 39346292832569834471424
19 1978417344403405821315979