A020340 - OEIS

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A020340 as a simple table

n	a(n)
2	36
3	4
4	378225
5	7056
6	14393520729
7	16
8	9
9	557904400
10	1322314049613223140496
11	36
12	613401598811409576100
13	321418490709904
14	837225
15	16
16	7535664872989640713426833504575377836025
17	36
18	16900
19	100
20	7112889

[36,4,378225,7056,14393520729,16,9,557904400, 1322314049613223140496,36,613401598811409576100, 321418490709904,837225,16, 7535664872989640713426833504575377836025,36,16900, 100,7112889]