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A216717
Duplicate of
A174072
.
0
1, 2, 6, 24, 114, 674, 4714, 37754, 340404, 3412176, 37631268
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..11.
CROSSREFS
Duplicate of
A174072
.
Sequence in context:
A189846
A189283
A177522
*
A174072
A224255
A326348
Adjacent sequences:
A216714
A216715
A216716
*
A216718
A216719
A216720
KEYWORD
dead
AUTHOR
N. J. A. Sloane
, Sep 15 2012
STATUS
approved
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Last modified May 2 04:48 EDT 2024. Contains 372178 sequences. (Running on oeis4.)