A274430 Positions in A274429 of products of distinct Fibonacci numbers > 1.

3, 5, 8, 9, 12, 13, 17, 18, 19, 23, 24, 25, 30, 31, 32, 33, 38, 39, 40, 41, 47, 48, 49, 50, 51, 57, 58, 59, 60, 61, 68, 69, 70, 71, 72, 73, 80, 81, 82, 83, 84, 85, 93, 94, 95, 96, 97, 98, 99, 107, 108, 109, 110, 111, 112, 113, 122, 123, 124, 125, 126, 127

Offset: 1

Author

Clark Kimberling, Jun 22 2016

Keywords

• nonn
• easy

Comments

Complement of A274431.

Crossrefs

Cf. A274429, A274431.

Programs

Mathematica

z = 200; f[n_] := Fibonacci[n];
u = Take[Sort[Flatten[Table[f[m] f[n], {n, 3, z}, {m, 3, n - 1}]]], 100]
g[n_] := LucasL[n];
v = Take[Sort[Flatten[Table[g[u] g[v], {u, 1, z}, {v, 1, u - 1}]]], z]
Intersection[u, v]
w = Union[u, v]  (* A274429 *)
Select[Range[300], MemberQ[u, w[[#]]] &]  (* A274430 *)
Select[Range[300], MemberQ[v, w[[#]]] &]  (* A274431 *)