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A081497
Duplicate of
A028270
.
3
1, 3, 8, 26, 90, 322, 1176, 4356, 16302, 61490, 233376, 890188, 3409588, 13104756
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..13.
CROSSREFS
Sequence in context:
A148817
A148818
A242903
*
A028270
A124383
A148819
Adjacent sequences:
A081494
A081495
A081496
*
A081498
A081499
A081500
KEYWORD
dead
STATUS
approved
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Last modified April 25 15:00 EDT 2024. Contains 371989 sequences. (Running on oeis4.)