A154393
formatted as a simple table:
n
a(n)
1
1
2
9
3
34
4
182
5
836
6
4025
7
19001
8
90358
9
428481
10
2034035
11
9651787
12
45806244
13
217378076
14
1031612713
15
2147483647
[1,9,34,182,836,4025,19001,90358,428481,2034035, 9651787,45806244,217378076,1031612713,2147483647]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 7 08:40 EST 2009. Contains 170430 sequences.
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