login
A188321
a(n) = [n*r] - [k*r] - [n*r-k*r], where r=1/sqrt(2), k=5, [ ]=floor.
4
0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 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, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 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, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1
OFFSET
1
COMMENTS
See A188014.
LINKS
FORMULA
a(n) = [n*r]-[5*r]-[n*r-5*r], where r=1/sqrt(2).
MATHEMATICA
r=2^(-1/2); k=5;
t=Table[Floor[n*r]-Floor[(n-k)*r]-Floor[k*r], {n, 1, 220}] (*A188321*)
Flatten[Position[t, 0]] (*A188322*)
Flatten[Position[t, 1]] (*A188323*)
PROG
(PARI) for(n=1, 100, print1(floor(n/sqrt(2)) - floor(5/sqrt(2)) - floor((n-5)/sqrt(2)), ", )) \\ G. C. Greubel, Apr 11 2018
(Magma) [Floor(n/Sqrt(2)) - Floor(5/Sqrt(2)) - Floor((n-5)/Sqrt(2)): n in [1..100]]; // G. C. Greubel, Apr 11 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 28 2011
STATUS
approved