A120053 - OEIS

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A120053 as a simple table

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	63
6	865
7	11068
8	133862
9	1563465
10	17836903
11	200051717
12	2214357712
13	24255601105
14	263439785143
15	2841076717752

[0,0,0,0,3,63,865,11068,133862,1563465,17836903, 200051717,2214357712,24255601105,263439785143, 2841076717752]