A215286 - OEIS

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A215286 as a simple table

n	a(n)
1	1
2	2
3	10
4	280
5	60060
6	85765680
7	2061378118800
8	346915095471584640
9	1736278161426147413954880
10	62144711688730139887005809020800
11	103104526145243794108489566205445861006400

[1,2,10,280,60060,85765680,2061378118800, 346915095471584640,1736278161426147413954880, 62144711688730139887005809020800, 103104526145243794108489566205445861006400]

[1,2,10,280,60060,85765680,2061378118800,
 346915095471584640,1736278161426147413954880,
 62144711688730139887005809020800,
 103104526145243794108489566205445861006400]