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!)
A190083 n + [n*r/s] + [n*t/s]; r=1, s=sin(2*Pi/5), t=csc(2*Pi/5). 5
3, 6, 9, 12, 15, 18, 21, 24, 27, 31, 34, 37, 40, 43, 46, 49, 52, 55, 59, 63, 66, 69, 72, 75, 78, 81, 84, 87, 91, 94, 97, 100, 103, 106, 109, 112, 115, 119, 123, 126, 129, 132, 135, 138, 141, 144, 147, 151, 154, 157, 160, 163, 166, 169, 172, 175, 179, 182, 186, 189, 192, 195, 198, 201, 204, 207, 211, 214, 217, 220, 223, 226, 229, 232, 235 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A190082.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

FORMULA

(See A190082.)

MATHEMATICA

r=1; s=Sin[2*Pi/5]; t=Csc[2*Pi/5];

a[n_] := n + Floor[n*s/r] + Floor[n*t/r];

b[n_] := n + Floor[n*r/s] + Floor[n*t/s];

c[n_] := n + Floor[n*r/t] + Floor[n*s/t];

Table[a[n], {n, 1, 120}]  (* A190082 *)

Table[b[n], {n, 1, 120}]  (* A190083 *)

Table[c[n], {n, 1, 120}]  (* A190084 *)

PROG

(PARI) for(n=1, 100, print1(n + floor(n/sin(2*Pi/5)) + floor(n/(sin(2*Pi/5))^2), ", ")) \\ G. C. Greubel, Nov 07 2018

(MAGMA) R:= RealField(); [n + Floor(n/Sin(2*Pi(R)/5)) + Floor(n/(Sin(2*Pi(R)/5))^2): n in [1..100]]; // G. C. Greubel, Nov 07 2018

CROSSREFS

Cf. A190082, A190084.

Sequence in context: A059563 A292641 A085126 * A117124 A323422 A071073

Adjacent sequences:  A190080 A190081 A190082 * A190084 A190085 A190086

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 04 2011

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 September 28 01:27 EDT 2021. Contains 347698 sequences. (Running on oeis4.)