A129551
formatted as a simple table:
n
a(n)
1
0
2
0
3
0
4
0
5
0
6
0
7
4
8
44
9
280
10
1304
11
12452
12
105012
13
977664
14
9239816
15
90776620
16
897446092
[0,0,0,0,0,0,4,44,280,1304,12452,105012,977664, 9239816,90776620,897446092]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 5 23:38 EST 2009. Contains 170428 sequences.
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