A000941
formatted as a simple table:
n
a(n)
1
0
2
0
3
0
4
0
5
2
6
5
7
21
8
58
9
194
10
570
11
1790
12
5434
13
16924
14
52362
15
163784
[0,0,0,0,2,5,21,58,194,570,1790,5434,16924,52362, 163784]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
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