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A097900 formatted as a simple table:

n a(n)
1 1
2 2
3 7
4 32
5 180
6 1200
7 9240
8 80640
9 786240
10 8467200
11 99792000
12 1277337600
13 17643225600
14 261534873600
15 4140968832000
16 69742632960000
17 1244905998336000
18 23475370254336000
19 466306218233856000
20 9731608032706560000

[1,2,7,32,180,1200,9240,80640,786240,8467200,
 99792000,1277337600,17643225600,261534873600,
 4140968832000,69742632960000,1244905998336000,
 23475370254336000,466306218233856000,
 9731608032706560000]

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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