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A292851
Fibonacci numbers that are also generalized octagonal numbers.
1
0, 1, 5, 8, 21, 4181
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Intersection of A000045 and A001082.
These are all the terms, as confirmed by Tengely (2009).
All (generalized) g-gonal numbers in Lucas sequences up to g=20 have been determined, see Tengely (2009).
LINKS
Table of n, a(n) for n=0..5.
Szabolcs Tengely, Finding g-gonal numbers in recurrence sequences, Fibonacci Quarterly, vol.46/47, no.3, pp.235-240, (2009).
CROSSREFS
Cf. A000045, A001082.
Cf. A039595 (triangular Fibonacci numbers).
Sequence in context: A363224 A277369 A140419 * A138023 A120037 A120038
Adjacent sequences: A292848 A292849 A292850 * A292852 A292853 A292854
KEYWORD
nonn,easy,fini,full
AUTHOR
Tomohiro Yamada, Sep 25 2017
STATUS
approved

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Last modified November 16 04:28 EST 2024. Contains 377779 sequences.
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