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

Author

Clark Kimberling, Feb 02 2012

Keywords

• nonn

Comments

For a guide to related sequences, see A205840.

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

Crossrefs

Cf. A204890, A205867, A205840.

Programs

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

Mathematica

(See the program at A205867.)