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 A187969 a(n) = [nr+kr]-[nr]-[kr], where r=sqrt(2), k=3, [ ]=floor. 4
 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 COMMENTS See A187950. LINKS G. C. Greubel, Table of n, a(n) for n = 1..10000 FORMULA a(n) = [(n+3)*r] - [n*r] - [3*r], where r=sqrt(2). MATHEMATICA r=2^(1/2); seqA=Table[Floor[(n+3)r]-Floor[n*r]-Floor[3r], {n, 1, 220}] (* A187969 *) Flatten[Position[seqA, 0] ] (* A187970 *) Flatten[Position[seqA, 1] ] (* A187971 *) PROG (PARI) for(n=1, 30, print1(floor((n+3)*sqrt(2)) - floor(n*sqrt(2)) - floor(3*sqrt(2)), ", ")) \\ G. C. Greubel, Jan 31 2018 (Magma) [Floor((n+3)*Sqrt(2)) - Floor(n*Sqrt(2)) - Floor(3*Sqrt(2)): n in [1..30]]; // G. C. Greubel, Jan 31 2018 CROSSREFS Cf. A187950, A187970, A187971. Sequence in context: A284683 A288673 A030213 * A132151 A238469 A288596 Adjacent sequences: A187966 A187967 A187968 * A187970 A187971 A187972 KEYWORD nonn AUTHOR Clark Kimberling, Mar 17 2011 STATUS approved

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Last modified May 28 07:31 EDT 2023. Contains 362992 sequences. (Running on oeis4.)