A205866 Positions of multiples of 8 in A204922 (differences of Fibonacci numbers).
14, 19, 21, 23, 37, 50, 56, 65, 67, 76, 78, 80, 86, 94, 109, 111, 112, 125, 131, 140, 142, 143, 152, 157, 159, 160, 169, 171, 173, 179, 185, 199, 211, 220, 222, 223, 236, 242, 248, 254, 263, 265, 266, 275, 277, 286, 288, 289, 298, 300, 302, 308, 314
Offset: 1
Keywords
Examples
In A204922=(1,2,1,4,3,2,7,6,5,3,12,11,...), multiples of 8 are in positions 14,19,21,... See the example at A205867.
Links
- Robert Israel, Table of n, a(n) for n = 1..10000
Programs
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Maple
R:= select(t -> combinat:-fibonacci(t[1])-combinat:-fibonacci(t[2]) mod 8 =0, [seq(seq([i,j],i=0..11),j=0..11)]): Res:= NULL: for kk from 3 to 50 do km:= kk mod 12; n0:= 1 + (kk-2)*(kk-3)/2; js:= [$n0 ..(n0+kk-3)]; Res:= Res, op( select(t -> member([kk, t+2-n0] mod 12,R), js)); od: Res; # Robert Israel, Jul 27 2020
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Mathematica
(See the program at A205867.)
Comments