A022684 - OEIS

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A022684 as a simple table

n	a(n)
0	1
1	-24
2	228
3	-944
4	114
5	13920
6	-40824
7	-35568
8	314943
9	-32016
10	-1256028
11	-1702560
12	7990622
13	15859872
14	-44241384
15	-69900560
16	66340899
17	389812176
18	368445848
19	-1602538800
20	-2603154606
21	114976000
22	12365751792

[1,-24,228,-944,114,13920,-40824,-35568,314943, -32016,-1256028,-1702560,7990622,15859872, -44241384,-69900560,66340899,389812176,368445848, -1602538800,-2603154606,114976000,12365751792]