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A053904 formatted as a simple table:

n a(n)
1 1
2 9
3 109
4 296848141
5 4341833151859
6 3399291958357679641
7 2412237158970509643109

[1,9,109,296848141,4341833151859,
 3399291958357679641,2412237158970509643109]

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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