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A274431 Positions in A274426 of products of distinct Lucas numbers > 1 (excluding 2). 3
1, 2, 4, 6, 7, 10, 11, 14, 15, 16, 20, 21, 22, 26, 27, 28, 29, 34, 35, 36, 37, 42, 43, 44, 45, 46, 52, 53, 54, 55, 56, 62, 63, 64, 65, 66, 67, 74, 75, 76, 77, 78, 79, 86, 87, 88, 89, 90, 91, 92, 100, 101, 102, 103, 104, 105, 106, 114, 115, 116, 117, 118, 119 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A274430.

LINKS

Table of n, a(n) for n=1..63.

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 *)

CROSSREFS

Cf. A274429, A274430.

Sequence in context: A319829 A272631 A002158 * A236477 A189214 A189131

Adjacent sequences:  A274428 A274429 A274430 * A274432 A274433 A274434

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 22 2016

STATUS

approved

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Last modified April 19 16:52 EDT 2019. Contains 322282 sequences. (Running on oeis4.)