A089960 - OEIS

%I #9 Feb 13 2022 06:13:03

%S 1,4,6,7,9,12,14,17,20,22,25,27,28,30,33,35,38,40,41,43,46,48,49,51,

%T 54,56,59,61,62,64,67,69,72,75,77,80,82,83,85,88,90,93,95,96,98,101,

%U 103,106,109,111,114,116,117,119,122,124,127,130,132,135,137,138,140,143,145,148,150,151,153,156,158

%N Positions in A089959 where 4 occurs.

%C a(n)/n tends to 2.

%F Sequence consists of the positive integers m that generate "4" using the formula of A089959: floor( 1/({m*k}*(1 - {m*k}) where k = 0.6180339... = phi^(-1) and {x} = fractional part.

%e a(5) = 9 since A089959(9) = 4.

%Y Cf. A089959.

%K nonn

%O 1,2

%A _Gary W. Adamson_, Nov 16 2003