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A300555 Numbers i such that Fibonacci(i) is divisible by i+k for k = 0..7. 1

%I #22 May 21 2018 02:57:33

%S 175472640,44915270400,50238568800,439287521400,572836904640,

%T 589596638400,735284012400,778042465200,987189789600,1261551677400,

%U 1297640010240,1307130728400,1569978804240,1979830125000,2705598768600

%N Numbers i such that Fibonacci(i) is divisible by i+k for k = 0..7.

%o (PARI) fibomod(n, m) = lift(Mod([0, 1; 1, 1], m)^(n+1))[1, 1];

%o isok(n) = prod(k=0, 7, fibomod(n, n+k)==0);

%Y Subsequence of A299155.

%Y Cf. A000045, A023172, A217738, A221018, A225219, A298684, A298685, A298686, A298687.

%K nonn

%O 1,1

%A _Silvester Resnik_, May 19 2018

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Last modified June 3 00:27 EDT 2024. Contains 373054 sequences. (Running on oeis4.)