A182602 Smallest Fibonacci number in a sequence of at least n consecutive composite Fibonacci numbers.

8, 21, 21, 2584, 2584, 832040, 832040, 832040, 832040, 832040, 832040, 832040, 832040, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976, 4807526976

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Formula

a(n) = A000045(A182601).

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

Example

a(2) = a(3) = 21 because (21, 34, 55) is a run of three consecutive Fibonacci composites, so 21 is in the sequence (21, 34) of at least 2 and in the sequence (21, 34, 55) of at least 3 consecutive composites in A000045.

Crossrefs

Cf. A005478, A090206.

Sequence in context: A108235 A130021 A003864 * A123255 A053750 A321439

Adjacent sequences: A182599 A182600 A182601 * A182603 A182604 A182605

Keyword

nonn

Author

R. J. Mathar, Nov 22 2010

Status

approved