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A051617 as a simple table

n a(n)
0 1
1 9
2 117
3 1989
4 41769
5 1044225
6 30282525
7 999323325
8 36974963025
9 1515973484025
10 68218806781125
11 3342721532275125
12 177164241210581625
13 10098361749003152625
14 616000066689192310125
15 40040004334797500158125

[1,9,117,1989,41769,1044225,30282525,999323325,
 36974963025,1515973484025,68218806781125,
 3342721532275125,177164241210581625,
 10098361749003152625,616000066689192310125,
 40040004334797500158125]

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Last modified October 18 04:57 EDT 2019. Contains 328145 sequences. (Running on oeis4.)