A011993
formatted as a simple table:
n
a(n)
2
1
3
3
4
4
5
8
6
47
7
421
8
1550
9
13316
10
212968
[1,3,4,8,47,421,1550,13316,212968]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
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