A207430 - OEIS

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A207430 as a simple table

n	a(n)
1	21
2	441
3	3633
4	29929
5	341329
6	3892729
7	39698733
8	404854641
9	4315250265
10	45995236225
11	481815567745
12	5047180107649
13	53243344229835
14	561670803164025
15	5908341620443125
16	62151175576890625
17	654538444302027625

[21,441,3633,29929,341329,3892729,39698733, 404854641,4315250265,45995236225,481815567745, 5047180107649,53243344229835,561670803164025, 5908341620443125,62151175576890625, 654538444302027625]