A005415
formatted as a simple table:
n
a(n)
0
1
1
0
2
1
3
2
4
15
5
140
6
1915
[1,0,1,2,15,140,1915]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 7 23:50 EST 2009. Contains 170430 sequences.
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