# A013448 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -160
4 1792
5 -484224
6 54495232
7 -9441003520
8 2598020579328
9 -756380393635840
10 305071008569196544
11 -144297159065656885248
12 81729693136918543335424
13 -55094722790449057575731200