A292643 Rank of (5+r)*n when all the numbers (5-r)*j and (5+r)*k, where r = sqrt(2), j>=1, k>=1, are jointly ranked.

2, 5, 8, 11, 13, 16, 19, 22, 25, 27, 30, 33, 36, 39, 41, 44, 47, 50, 52, 55, 58, 61, 64, 66, 69, 72, 75, 78, 80, 83, 86, 89, 92, 94, 97, 100, 103, 105, 108, 111, 114, 117, 119, 122, 125, 128, 131, 133, 136, 139, 142, 145, 147, 150, 153, 156, 158, 161, 164

Offset

1,1

Links

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

Mathematica

z = 120; r = 5 - Sqrt[2]; s = 5 + Sqrt[2];
Table[n + Floor[n*r/s], {n, 1, z}]  (* A292642 *)
Table[n + Floor[n*s/r], {n, 1, z}]  (* A292643 *)

Prog

(PARI) vector(100, n, n+floor(n*(5+sqrt(2))/(5-sqrt(2)))) \\ G. C. Greubel, Aug 20 2018
(Magma) [n+Floor(n*(5+Sqrt(2))/(5-Sqrt(2))): n in [1..100]]; // G. C. Greubel, Aug 20 2018

Crossrefs

Cf. A292642 (complement).

Sequence in context: A206911 A093609 A249118 * A140101 A141207 A190057

Adjacent sequences: A292640 A292641 A292642 * A292644 A292645 A292646

Keyword

nonn,easy

Author

Clark Kimberling, Sep 26 2017

Status

approved