# A024254 (b-file synthesized from sequence entry)
0 0
1 1
2 -4
3 -44
4 3296
5 -125744
6 2079296
7 275799616
8 -47379887104
9 4774911867136
10 -253451637781504
11 -33811598641040384
12 15217039844307869696
13 -3403238497314405330944
14 497468943189707788599296