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A097476 as a simple table

na(n)
11
24
32304
41194393600
51941728542064640000
625569049282962188245401600000000
75866627428836325123819714259080708096000000000000

[1,4,2304,1194393600,1941728542064640000,
 25569049282962188245401600000000,
 5866627428836325123819714259080708096000000000000]