# A292934 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 6
4 48
5 400
6 4140
7 49644
8 681296
9 10515600
10 180349380
11 3402380740
12 70023004920
13 1561206957336
14 37485640585484
15 964345394431020
16 26462386594676640
17 771532717446066208
18 23817889096309943892
19 776127882633846005268