A022562
formatted as a simple table:
n
a(n)
1
1
2
1
3
2
4
5
5
14
6
50
7
191
8
881
9
4494
10
26389
11
184749
12
1728404
13
23805256
14
491544474
[1,1,2,5,14,50,191,881,4494,26389,184749,1728404, 23805256,491544474]
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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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