# A009627 (b-file synthesized from sequence entry)
0 0
1 2
2 8
3 8
4 -2304
5 -183776
6 -15141248
7 -1461427328
8 -166452797440
9 -21941424508416
10 -3231615038191616
11 -498564870033053696
12 -67544768806700253184
13 -435077810759086759936
14 7017404598452791761076224