A210280 - OEIS

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A210280 as a simple table

n	a(n)
0	1
1	720
2	1779148800
3	148953184174080000
4	126983900296423931904000000
5	614812159599342234168301977600000000
6	11942354952042770431904585727413846016000000000

[1,720,1779148800,148953184174080000, 126983900296423931904000000, 614812159599342234168301977600000000, 11942354952042770431904585727413846016000000000]