A157250
formatted as a simple table:
n
a(n)
1
1
2
5
3
13
4
563
5
5971
6
558771
7
1964215
8
8121909
9
12326713
10
23025711
11
26921605
12
341569806
13
399292158
[1,5,13,563,5971,558771,1964215,8121909,12326713, 23025711,26921605,341569806,399292158]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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