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A188079 [nr]-[kr]-[nr-kr], where r=sqrt(3), k=6, [ ]=floor. 3
0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
1
COMMENTS
See A188014.
LINKS
FORMULA
a(n)=[nr]-[6r]-[nr-6r], where r=sqrt(3)
MATHEMATICA
r=3^(1/2)); k=6;
t=Table[Floor[n*r]-Floor[(n-k)*r]-Floor[k*r], {n, 1, 220}] (*A188079*)
Flatten[Position[t, 0]] (*A188080*)
Flatten[Position[t, 1]] (*A188081*)
CROSSREFS
Sequence in context: A289112 A289165 A156729 * A049320 A284817 A309766
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 20 2011
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)