# A058231 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 36
4 -16
5 5041728
6 -19631351040
7 -62024429150208
8 -2805793044443561984
9 -1213280369793911777918976
10 6452140445339288271043778576384
11 -30464666973776461531165746768673505280
12 2509543205099684468628113981366827179048960
13 -83207632517142132982462515955707028888811707910062080