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A025531 formatted as a simple table:

n a(n)
1 2
2 36
3 210
4 6750
5 8120
6 459620
7 2067170
8 20522250
9 22318758
10 2905171038
11 3098543448
12 554652370272
13 584150230092
14 612299943684
15 2556925522866

[2,36,210,6750,8120,459620,2067170,20522250,
 22318758,2905171038,3098543448,554652370272,
 584150230092,612299943684,2556925522866]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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