A321372 n + [n*r/t] + [n*s/t], where r = 1, s = cos(2*Pi/5), t = sec(2*Pi/5).

1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 15, 16, 18, 19, 20, 21, 23, 24, 25, 27, 29, 30, 32, 33, 34, 36, 37, 38, 39, 41, 42, 44, 46, 47, 48, 50, 51, 52, 54, 55, 56, 58, 60, 61, 62, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 78, 79, 80, 82, 83, 84, 86, 88, 89, 91, 92

Offset

1,2

Comments

See Comments at A190082.

Links

Table of n, a(n) for n=1..66.

Mathematica

r = 1; s = Cos[2 Pi/5]; t = Sec[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];
z = 120;
Table[a[n], {n, 1, z}]  (* A321370 *)
Table[b[n], {n, 1, z}]  (* A321371 *)
Table[c[n], {n, 1, z}]  (* A321372 *)

Crossrefs

Cf. A190083, A321370, A321372.

Sequence in context: A325366 A192189 A285375 * A001948 A121912 A325113

Adjacent sequences: A321369 A321370 A321371 * A321373 A321374 A321375

Keyword

nonn

Author

Clark Kimberling, Nov 08 2018

Status

approved