A083054 a(n) = floor(sqrt(3)*n) - 3*floor(n/sqrt(3)).

1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 1, 0, 2, 1, 2, 1, 0, 2, 0, 2, 1, 0, 1, 0, 2, 0, 2, 1, 0, 1

Offset

1,3

Links

Table of n, a(n) for n=1..105.

Boris Gourevitch, Graph of A083057

Formula

a(n) = floor(n*sqrt(3)) mod 3. - T. D. Noe, Oct 11 2006

Prog

(PARI) {a(n)=if(n<1, 0, sqrtint(3*n^2)-3*sqrtint(n^2\3))} /* Michael Somos, Aug 31 2006 */

Crossrefs

Cf. A083035, A083038, A083055, A083056, A083057.

Cf. A022383 (floor(n*sqrt(3))).

Sequence in context: A194702 A118682 A198393 * A336921 A297742 A061264

Adjacent sequences: A083051 A083052 A083053 * A083055 A083056 A083057

Keyword

nonn

Author

Benoit Cloitre, Apr 18 2003

Status

approved