A262820 - OEIS

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A262820 as a simple table

n	a(n)
1	0
2	0
3	2744
4	21610
5	234096
6	3103450
7	43563108
8	617554352
9	8776056648
10	121679222354
11	1695215156348
12	23701894089472
13	331858416865360
14	4647495627474864
15	65083961876291512
16	910998629244209610

[0,0,2744,21610,234096,3103450,43563108,617554352, 8776056648,121679222354,1695215156348, 23701894089472,331858416865360,4647495627474864, 65083961876291512,910998629244209610]