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A098980
Duplicate of
A007647
.
0
1, 3, 9, 21, 363, 2161, 4839, 49521, 105994
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..9.
CROSSREFS
Sequence in context:
A193374
A191998
A362341
*
A007647
A247182
A363967
Adjacent sequences:
A098977
A098978
A098979
*
A098981
A098982
A098983
KEYWORD
dead
STATUS
approved
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Last modified May 6 13:11 EDT 2024. Contains 372293 sequences. (Running on oeis4.)