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A204925 a(n) is the index j < k such that n divides s(k) - s(j), where k is the least index (A204924) for which such j exists, and s=(1,2,3,5,8,13,...), the Fibonacci numbers.

%I A204925 #14 Mar 17 2022 01:13:00
%S A204925 1,1,2,1,3,2,1,4,3,3,2,1,5,6,5,4,7,3,2,1,6,1,3,10,4,5,1,4,4,8,3,2,1,7,
%T A204925 1,10,9,6,5,11,7,6,3,1,5,3,5,10,8,4,8,3,2,1,8,5,4,1,10,16
%N A204925 a(n) is the index j < k such that n divides s(k) - s(j), where k is the least index (A204924) for which such j exists, and s=(1,2,3,5,8,13,...), the Fibonacci numbers.
%C A204925 For a guide to related sequences, see A204892.
%H A204925 G. C. Greubel, <a href="/A204925/b204925.txt">Table of n, a(n) for n = 1..1000</a>
%e A204925 (See the Example section at A204924.)
%t A204925 (See the program at A204924.)
%Y A204925 Cf. A204924, A204892, A000045.
%K A204925 nonn
%O A204925 1,3
%A A204925 _Clark Kimberling_, Jan 21 2012