A097476 - OEIS

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A097476 as a simple table

n	a(n)
1	1
2	4
3	2304
4	1194393600
5	1941728542064640000
6	25569049282962188245401600000000
7	5866627428836325123819714259080708096000000000000

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