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A090208 Partial sums of sequence (A090206) of consecutive nonprime Fibonacci numbers. 0

%I #19 Jul 05 2022 11:35:01

%S 1,2,9,29,55,89,199,521,987,1597,3571,6765,10946,17711,28657,64079,

%T 121393,196418,317811,514229,1149851,2178309,3524578,5702887,9227465,

%U 14930352,24157817,39088169,63245986,102334155

%N Partial sums of sequence (A090206) of consecutive nonprime Fibonacci numbers.

%F F(0) = 0; F(1) = 1; F(n) = F(n-1) + F(n-2); F(0:9) = 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 nonprimes: 0, 1, 1, 8, 21 sums of consecutive nonprimes: 1, 2, 9, 29

%t Total /@ Partition[ Select[Fibonacci /@ Range[0, 40], ! PrimeQ[#] &], 2, 1] (* _Seth A. Troisi_, May 14 2022 *)

%Y Cf. A090206, A000045.

%K easy,nonn

%O 0,2

%A _Felix Tubiana_, Jan 22 2004

%E a(29) corrected by _Seth A. Troisi_, May 13 2022

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)