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A190199 Positions of 0 in A190198; complement of A190200. 3
2, 3, 6, 7, 9, 11, 14, 16, 18, 21, 22, 25, 26, 28, 29, 32, 33, 35, 37, 40, 41, 42, 44, 47, 48, 51, 52, 54, 58, 59, 61, 63, 66, 67, 70, 73, 74, 77, 78, 80, 82, 84, 85, 87, 89, 92, 93, 96, 97, 99, 100, 103, 104, 106, 108, 111, 113, 115, 118, 119, 122, 123, 125, 126, 129, 130, 132, 134, 137, 138, 141, 144, 145, 148, 149, 151, 153, 155 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5500

MATHEMATICA

u = 3^(1/2); v = 1/u;

f[n_] := Floor[n*u + n*v] - Floor[n*u] - Floor[n*v]

t = Table[f[n], {n, 1, 120}] (* A190198 *)

Flatten[Position[t, 0]]      (* A190199 *)

Flatten[Position[t, 1]]      (* A190200 *)

PROG

(PARI) is(n) = my(u = sqrt(3), v = 1/u); !(floor(n*u + n*v) - floor(n*u) - floor(n*v)) \\ Iain Fox, Dec 29 2017

CROSSREFS

Cf. A190198, A190200.

Sequence in context: A181732 A338901 A341333 * A014873 A029467 A029515

Adjacent sequences:  A190196 A190197 A190198 * A190200 A190201 A190202

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 05 2011

STATUS

approved

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Last modified May 6 17:52 EDT 2021. Contains 343586 sequences. (Running on oeis4.)