A223687 - OEIS

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A223687 as a simple table

n	a(n)
1	144
2	2304
3	37008
4	595584
5	9594000
6	154616832
7	2492365968
8	40180445568
9	647800215696
10	10444288589568
11	168392298756240
12	2714990519274624
13	43773950520548496
14	705771016545286656
15	11379212680977220752

[144,2304,37008,595584,9594000,154616832, 2492365968,40180445568,647800215696, 10444288589568,168392298756240,2714990519274624, 43773950520548496,705771016545286656, 11379212680977220752]