A028333
formatted as a simple table:
n
a(n)
1
2
2
5
3
16
4
59
5
247
6
1111
7
5294
8
26310
[2,5,16,59,247,1111,5294,26310]
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N. J. A. Sloane
(
njas@research.att.com
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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