A195394 - OEIS

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A195394 as a simple table

n	a(n)
0	1
1	3628800
2	2432902008176640000
3	265252859812191058636308480000000
4	815915283247897734345611269596115894272000000000
5	30414093201713378043612608166064768844377641568960512000000000000

[1,3628800,2432902008176640000, 265252859812191058636308480000000, 815915283247897734345611269596115894272000000000, 30414093201713378043612608166064768844377641568960\ 512000000000000]