|
%I #11 Sep 08 2022 08:45:57
%S 1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,
%T 1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,
%U 0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,0,0,1,1,0
%N a(n) = [nu+nv]-[nu]-[nv], where u=sqrt(2), v=2u, and []=floor.
%H G. C. Greubel, <a href="/A190245/b190245.txt">Table of n, a(n) for n = 1..10000</a>
%t u = 2^(1/2); v = 2u;
%t f[n_] := Floor[n*u + n*v] - Floor[n*u] - Floor[n*v]
%t t = Table[f[n], {n, 1, 120}] (*A190245*)
%t Flatten[Position[t, 0]] (*A190246*)
%t Flatten[Position[t, 1]] (*A190247*)
%o (PARI) for(n=1,30, print1(floor(3*n*sqrt(2)) - floor(n*sqrt(2)) - floor(2*n*sqrt(2)), ", ")) \\ _G. C. Greubel_, Dec 26 2017
%o (Magma) [Floor(3*n*Sqrt(2)) - Floor(n*Sqrt(2)) - Floor(2*n*Sqrt(2)): n in [1..30]]; // _G. C. Greubel_, Dec 26 2017
%Y Cf. A190246, A190247.
%K nonn
%O 1
%A _Clark Kimberling_, May 06 2011
|
