A072950
formatted as a simple table:
n
a(n)
1
0
2
0
3
3
4
19
5
107
6
691
7
4929
8
39958
9
361114
10
3617842
11
39839167
12
478446607
[0,0,3,19,107,691,4929,39958,361114,3617842, 39839167,478446607]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 23 17:09 EST 2009. Contains 167438 sequences.
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