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A188083
[nr+kr]-[nr]-[kr], where r=sqrt(3), k=2, [ ]=floor.
3
1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1
OFFSET
1
COMMENTS
See A187950.
FORMULA
a(n)=[nr+2r]-[nr]-[2r], where r=sqrt(3).
MATHEMATICA
r=3^(1/2); k=2;
seqA=Table[Floor[n*r+k*r]-Floor[n*r]-Floor[k*r], {n, 1, 220}] (* A188083 *)
Flatten[Position[seqA, 0] ] (* A188084 *)
Flatten[Position[seqA, 1] ] (* A188085 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 20 2011
STATUS
approved