A072470 - OEIS

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A072470 as a simple table

n	a(n)
0	0
1	9
2	16
3	144
4	7056
5	17424
6	151880976
7	3370896
8	11141224704
9	65067847056
10	39037856400
11	107295207555600
12	189756686048400
13	3749779657193648400
14	2631616745340978864144
15	15179712895673097530256

[0,9,16,144,7056,17424,151880976,3370896, 11141224704,65067847056,39037856400, 107295207555600,189756686048400, 3749779657193648400,2631616745340978864144, 15179712895673097530256]