A182601 Position (index) of the smallest Fibonacci number in a sequence of at least n consecutive composite Fibonacci numbers.

6, 8, 8, 18, 18, 30, 30, 30, 30, 30, 30, 30, 30, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 138, 138, 138

Offset

1,1

Comments

All entries are of the form A001605(.)+1.

The records in A182600 are 1, 3, 5, 13, 35, 47, 221,... with first differences 2, 2, 8, 22, 12, 174,... and these are the frequencies (repetitions) of the entries in this sequence here.

Links

Table of n, a(n) for n=1..50.

Formula

min{ i: A000045(j) in A002808 for all j=i..i+n-1}.

Crossrefs

Cf. A005478, A090206.

Sequence in context: A315948 A315949 A135581 * A261506 A021596 A166528

Adjacent sequences: A182598 A182599 A182600 * A182602 A182603 A182604

Keyword

nonn

Author

R. J. Mathar, Nov 22 2010

Status

approved