A013460 - OEIS

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A013460 as a simple table

n	a(n)
0	1
1	0
2	0
3	-3
4	0
5	23
6	90
7	-721
8	-3864
9	32759
10	326214
11	-2672461
12	-38496876
13	310461227
14	6363118762
15	-49895013169
16	-1391451773264
17	10516703525327
18	390207547318222
19	-2811203923750741
20	-136581823796686036

[1,0,0,-3,0,23,90,-721,-3864,32759,326214, -2672461,-38496876,310461227,6363118762, -49895013169,-1391451773264,10516703525327, 390207547318222,-2811203923750741, -136581823796686036]