A109769
formatted as a simple table:
n
a(n)
1
18
2
25
3
133
4
2107
5
4676
6
226037
7
4477739
8
827867201
[18,25,133,2107,4676,226037,4477739,827867201]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 23 17:09 EST 2009. Contains 167438 sequences.
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