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A010936 formatted as a simple table:

n a(n)
0 1
1 20
2 190
3 1140
4 4845
5 15504
6 38760
7 77520
8 125970
9 167960
10 184756
11 167960
12 125970
13 77520
14 38760
15 15504
16 4845
17 1140
18 190
19 20
20 1

[1,20,190,1140,4845,15504,38760,77520,125970,
 167960,184756,167960,125970,77520,38760,15504,
 4845,1140,190,20,1]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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