A077521 - OEIS

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A077521 as a simple table

n	a(n)
1	1
2	2
3	30
4	4110
5	53430
6	6037590
7	718473210
8	802534575570
9	901246328365110
10	1001284670813637210
11	1104416991907441842630
12	120381452117911160846670
13	130132349739461964875250270
14	141453864166795155819397043490

[1,2,30,4110,53430,6037590,718473210,802534575570, 901246328365110,1001284670813637210, 1104416991907441842630,120381452117911160846670, 130132349739461964875250270, 141453864166795155819397043490]