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%I #6 Oct 10 2024 15:23:31
%S 3,7,9,18,23,28,29,44,49,54,62,64,72,74,89,90,100,104,105,112,113,117,
%T 127,133,138,140,147,166,168,175,180,181,184,186,187,191,195,209,216,
%U 220,228,229,242,246,249,253,256,272,276,277
%N Position of n-th 3 in A031269.
%t Position[Flatten[Table[IntegerDigits[Fibonacci[n+1],5],{n,50}]],3]//Flatten (* _Harvey P. Dale_, Oct 10 2024 *)
%K nonn
%O 1,1
%A _Clark Kimberling_