A077284
formatted as a simple table:
n
a(n)
0
1
1
4
2
13
3
41
4
125
5
367
6
1111
7
3395
8
10491
9
32670
10
102231
11
320990
12
1010196
13
3184138
[1,4,13,41,125,367,1111,3395,10491,32670,102231, 320990,1010196,3184138]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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