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A288963 as a simple table

n a(n)
1 0
2 0
3 36
4 288
5 1320
6 4464
7 12348
8 29568
9 63504
10 125280
11 230868
12 402336
13 669240
14 1070160
15 1654380
16 2483712
17 3634464
18 5199552
19 7290756
20 10041120
21 13607496
22 18173232
23 23951004
24 31185792
25 40158000
26 51186720
27 64633140
28 80904096
29 100455768
30 123797520

[0,0,36,288,1320,4464,12348,29568,63504,125280,
 230868,402336,669240,1070160,1654380,2483712,
 3634464,5199552,7290756,10041120,13607496,
 18173232,23951004,31185792,40158000,51186720,
 64633140,80904096,100455768,123797520]

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Last modified February 22 23:44 EST 2020. Contains 332157 sequences. (Running on oeis4.)