A135924
formatted as a simple table:
n
a(n)
1
0
2
0
3
0
4
0
5
2540
6
583020
7
99951390
8
16059395240
9
2598958192572
[0,0,0,0,2540,583020,99951390,16059395240, 2598958192572]
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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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