# A007314 (b-file synthesized from sequence entry)
1 1
2 -2
3 -8
4 -152
5 -5024
6 -247616
7 -16845056
8 -1510219136
9 -172781715968
10 -24607783918592
11 -4275324219846656
12 -890827947571834880
13 -219400661959063912448
14 -63076591184224413974528
15 -20939716311776104453111808