login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A292640 Rank of (4-r)*n when all the numbers (4-r)*j and (4+r)*k, where r = sqrt(2), j>=1, k>=1, are jointly ranked. 2
1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 33, 35, 36, 38, 39, 41, 42, 44, 45, 47, 48, 50, 51, 53, 54, 56, 57, 59, 60, 62, 63, 65, 66, 67, 69, 70, 72, 73, 75, 76, 78, 79, 81, 82, 84, 85, 87, 88, 90, 91, 93, 94, 96, 97 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

MATHEMATICA

z = 120; r = 4 - Sqrt[2]; s = 4 + Sqrt[2];

Table[n + Floor[n*r/s], {n, 1, z}]  (* A292640 *)

Table[n + Floor[n*s/r], {n, 1, z}]  (* A292641 *)

PROG

(PARI) vector(100, n, n+floor(n*(4-sqrt(2))/(4+sqrt(2)))) \\ G. C. Greubel, Aug 20 2018

(MAGMA) [n+Floor(n*(4-Sqrt(2))/(4+Sqrt(2))): n in [1..100]]; // G. C. Greubel, Aug 20 2018

CROSSREFS

Cf. A292641 (complement).

Sequence in context: A054386 A127450 A329843 * A059564 A329925 A001651

Adjacent sequences:  A292637 A292638 A292639 * A292641 A292642 A292643

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Sep 26 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 24 02:02 EDT 2021. Contains 348217 sequences. (Running on oeis4.)