# A182437 (b-file synthesized from sequence entry)
0 0
1 2
2 0
3 12
4 40
5 270
6 1848
7 14840
8 133488
9 1334970
10 14684560
11 176214852
12 2290793128
13 32071103750
14 481066556280
15 7697064900464
16 130850103307616
17 2355301859537394
18 44750735331210144
19 895014706624203260
20 18795308839108268040
21 413496794460381897342