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A190233
a(n) = [n*u+n*v] - [n*u] - [n*v], where u=sin(Pi/8), v=cos(Pi/8), and []=floor.
3
1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0
OFFSET
1
LINKS
MATHEMATICA
u = Sin[Pi/8]; v = Cos[Pi/8];
f[n_] := Floor[n*u + n*v] - Floor[n*u] - Floor[n*v]
t = Table[f[n], {n, 1, 120}] (* A190233 *)
Flatten[Position[t, 0]] (* A190234 *)
Flatten[Position[t, 1]] (* A190235 *)
PROG
(PARI) for(n=1, 30, print1(floor(n*(sin(Pi/8) + cos(Pi/8))) - floor(n*cos(Pi/8)) - floor(n*sin(Pi/8)), ", ")) \\ G. C. Greubel, Dec 27 2017
(Magma) C<i> := ComplexField(); [Floor(n*(Sin(Pi(C)/8) + Cos(Pi(C)/8))) - Floor(n*Sin(Pi(C)/8)) - Floor(n*Cos(Pi(C)/8)): n in [1..30]]; // G. C. Greubel, Dec 27 2017
CROSSREFS
Sequence in context: A077049 A124895 A089885 * A143242 A136442 A168030
KEYWORD
nonn
AUTHOR
Clark Kimberling, May 06 2011
STATUS
approved