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A233284
a(n) = largest m such that 1, 2, ..., m divide n-th Fibonacci number; a(n) = A055874(A000045(n)).
5
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, 12
OFFSET
1,3
COMMENTS
It seems that the records occur at the positions given by A233283: 1, 3, 12, 60, 120, 840, 2520, 12600, ...
The corresponding record values begin as 1, 2, 4, 6, 12, 16, 24, 36, ... (maybe A007416?).
LINKS
CROSSREFS
Differs from A233285 for the first time at n=120, where a(120)=12, while A233285(120)=7.
Sequence in context: A152828 A376649 A233285 * A112195 A103956 A103957
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 12 2013
STATUS
approved