A264275 - OEIS

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A264275 as a simple table

n	a(n)
1	64
2	1800
3	50625
4	1143000
5	25806400
6	600090240
7	13954224384
8	323177889984
9	7484754845584
10	173362944655124
11	4015456912022689
12	93006360976711231
13	2154221392895732449
14	49896286681978765567
15	1155702674228671452961

[64,1800,50625,1143000,25806400,600090240, 13954224384,323177889984,7484754845584, 173362944655124,4015456912022689, 93006360976711231,2154221392895732449, 49896286681978765567,1155702674228671452961]