A038727
formatted as a simple table:
n
a(n)
1
0
2
0
3
80
4
1280
5
14320
6
148480
7
1459840
8
13835680
9
127784640
[0,0,80,1280,14320,148480,1459840,13835680, 127784640]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 6 19:58 EST 2009. Contains 170429 sequences.
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