A069386
formatted as a simple table:
n
a(n)
1
2047
2
4017157
3
7308428597
4
12588144461329
5
21067276157958271
[2047,4017157,7308428597,12588144461329, 21067276157958271]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
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