A121093
formatted as a simple table:
n
a(n)
0
0
1
0
2
1
3
8
4
31
5
132
6
500
7
1924
8
7216
9
27194
10
101978
11
383319
12
1440970
[0,0,1,8,31,132,500,1924,7216,27194,101978,383319, 1440970]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
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