A191162 - OEIS

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A191162

a(n) = [4*n*Pi] - 2*[2*n*Pi], where [ ]=floor.

0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

LINKS

Table of n, a(n) for n=1..116.

MATHEMATICA

f[n_] := Floor[4 n*Pi] - 2*Floor[2 n*Pi];

t = Table[f[n], {n, 1, 220}] (* A191162 *)

Flatten[Position[t, 0]] (* A191214 *)

Flatten[Position[t, 1]] (* A191215 *)

CROSSREFS

Cf. A191214, A191215.

Sequence in context: A269927 A374468 A246146 * A234046 A285565 A188076

Adjacent sequences: A191159 A191160 A191161 * A191163 A191164 A191165

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 27 2011

STATUS

approved