A097977
formatted as a simple table:
n
a(n)
1
2
2
13
3
67
4
1151
5
9277
6
1616609
7
1874723
[2,13,67,1151,9277,1616609,1874723]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 19 12:50 EST 2009. Contains 171053 sequences.
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