# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a182600 Showing 1-1 of 1 %I A182600 #13 Jul 25 2014 08:55:08 %S A182600 1,3,1,3,5,5,13,3,35,47,5,221,71,1,15,59,59,1,2399,1751,663,3923,365, %T A182600 4753,11129,5195,5241,1511,13321,31005,23071,25109,18069,53015,196271, %U A182600 36401,156259,3647,11021,326805,118379,235709,350399,167051,165661,935631 %N A182600 Run length of the n-th run of Fibonacci composites. %C A182600 There is no upper bound to the entries: F_{k*n} is divisible by F_k, so whenever integers j, j+1, ..., j+n are composite (and > 4), F_j, ..., F_{j+n} are also composite. - _Robert Israel_, Nov 19 2010 %F A182600 a(n) = A001605(n+3)-A001605(n+2)-1. %e A182600 The first run contains A000045(6), the second A000045(8..10), the third A000045(12), the fourth A000045(14..16). %Y A182600 Cf. A000045, A001605. %K A182600 nonn %O A182600 1,2 %A A182600 _R. J. Mathar_, Nov 22 2010 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE