A292639 Rank of (3+r)*n when all the numbers (3-r)*j and (3+r)*k, where r = sqrt(5), j>=1, k>=1, are jointly ranked.

7, 15, 23, 31, 39, 47, 54, 62, 70, 78, 86, 94, 102, 109, 117, 125, 133, 141, 149, 157, 164, 172, 180, 188, 196, 204, 212, 219, 227, 235, 243, 251, 259, 267, 274, 282, 290, 298, 306, 314, 322, 329, 337, 345, 353, 361, 369, 376, 384, 392, 400, 408, 416, 424

Offset

1,1

Links

Clark Kimberling, Table of n, a(n) for n = 1..1000

Mathematica

z = 120; r = 3 - Sqrt[5]; s = 3 + Sqrt[5];
Table[n + Floor[n*r/s], {n, 1, z}]  (* A292638 *)
Table[n + Floor[n*s/r], {n, 1, z}]  (* A292639 *)

Crossrefs

Cf. A292638 (complement).

Sequence in context: A206906 A295669 A179890 * A337239 A043449 A136768

Adjacent sequences: A292636 A292637 A292638 * A292640 A292641 A292642

Keyword

nonn,easy

Author

Clark Kimberling, Sep 25 2017

Status

approved