# A152620 (b-file synthesized from sequence entry)
0 1
1 -2
2 10
3 -68
4 484
5 -3464
6 24808
7 -177680
8 1272592
9 -9114656
10 65281696
11 -467565632
12 3348834880
13 -23985285248
14 171789272704
15 -1230402470144
16 8812484124928
17 -63117458178560
18 452064760678912
19 -3237813336359936