A117808
formatted as a simple table:
n
a(n)
0
3
1
13
2
181
3
2521
4
489061
5
6811741
6
1321442641
7
18405321661
8
3570537526921
9
9647591076297901
[3,13,181,2521,489061,6811741,1321442641, 18405321661,3570537526921,9647591076297901]
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Maintained by
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(
njas@research.att.com
)
Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
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