A194299 - OEIS

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A194299

Triangular array: g(n,k)=number of fractional parts (i*r) in interval [(k-1)/n, k/n], for 1<=i<=n^2, 1<=k<=n, r=(1+sqrt(3))/2.

2

1, 3, 1, 3, 3, 3, 4, 5, 3, 4, 6, 5, 5, 5, 4, 6, 6, 7, 5, 7, 5, 7, 7, 7, 8, 6, 8, 6, 9, 8, 8, 9, 7, 8, 8, 7, 9, 8, 10, 8, 10, 9, 9, 9, 9, 10, 10, 10, 11, 10, 10, 10, 10, 10, 9, 10, 11, 11, 12, 11, 11, 11, 11, 11, 11, 11, 11, 13, 12, 11, 13, 12, 12, 11, 13, 12, 12, 12, 13, 14, 13

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

LINKS

Table of n, a(n) for n=1..81.

EXAMPLE

First eight rows:

1

3..1

3..3..3

4..5..3..4

6..5..5..5..4

6..6..7..5..7..5

7..7..7..8..6..8..6

9..8..8..9..7..8..8..7

MATHEMATICA

r = (1+Sqrt[3])/2;

f[n_, k_, i_] := If[(k - 1)/n <= FractionalPart[i*r] < k/n, 1, 0]

g[n_, k_] := Sum[f[n, k, i], {i, 1, n^2}]

TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]

Flatten[%] (* A194299 *)

CROSSREFS

Sequence in context: A024163 A029155 A042951 * A029154 A211974 A136297

Adjacent sequences: A194296 A194297 A194298 * A194300 A194301 A194302

KEYWORD

nonn,tabl

AUTHOR

Clark Kimberling, Aug 21 2011

STATUS

approved