A121143
formatted as a simple table:
n
a(n)
1
1
2
1
3
5
4
29
5
213
6
1545
7
11431
8
84037
9
617831
10
4529489
[1,1,5,29,213,1545,11431,84037,617831,4529489]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
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