A007878
formatted as a simple table:
n
a(n)
1
1
2
2
3
5
4
16
5
59
6
246
7
1103
8
5247
9
26059
10
133881
[1,2,5,16,59,246,1103,5247,26059,133881]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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