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A233285 a(n) = largest m such that m! divides n-th Fibonacci number; a(n) = A055881(A000045(n)). 9
1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 6, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The lengths of palindromic prefixes begin as:

1, 2, 5, 8, 11, 23, 35, 47, 59, 119, 239, 359, 479, 959, 1439, 1919, ...

+1 results: 2, 3, 6, 9, 12, 24, 36, 48, 60, 120, 240, 360, 480, 960, 1440, 1920, ...

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..12600

CROSSREFS

Differs from A233284 for the first time at n=120, where a(120)=7, while A233284(120)=12.

Cf. A055881, A000045, A001175-A001177, A233283, A233281.

Sequence in context: A161045 A029322 A152828 * A233284 A112195 A103956

Adjacent sequences:  A233282 A233283 A233284 * A233286 A233287 A233288

KEYWORD

nonn

AUTHOR

Antti Karttunen, Dec 06 2013

STATUS

approved

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Last modified September 20 10:17 EDT 2021. Contains 347584 sequences. (Running on oeis4.)