# A012486 (b-file synthesized from sequence entry)
0 1
1 -1
2 -15
3 359
4 3713
5 347151
6 62839153
7 10196506423
8 2397571040897
9 714196911010335
10 263318643848985457
11 118248746057101708295
12 63495547245752463558145
13 40188528694405725339687983