# A012495 (b-file synthesized from sequence entry)
0 1
1 -2
2 20
3 -632
4 39440
5 -4087712
6 634237760
7 -137605112192
8 39776178356480
9 -14775064298435072
10 6857795892626969600
11 -3889298341511511652352
12 2646362625886738240901120
13 -2127690488032789501903020032