A194325 Triangular array: g(n,k)=number of fractional parts (i*r) in interval [(k-1)/n, k/n], for 1<=i<=n, 1<=k<=n, r=2-sqrt(2).

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

Offset

1,19

Comments

See A194285.

Links

Table of n, a(n) for n=1..99.

Example

First twelve rows:
1
1..1
1..1..1
1..1..1..1
1..1..1..1..1
0..1..1..2..1..1
1..1..1..1..1..1..1
1..1..1..0..2..1..1..1
1..1..1..1..1..1..2..0..1
0..2..1..1..0..2..1..1..1..1
0..2..1..1..1..1..1..1..1..1..1
1..1..1..1..1..1..1..1..1..1..1..1

Mathematica

r = 2-Sqrt[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}]
TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]
Flatten[%]    (* A194325 *)

Crossrefs

Cf. A194285.

Sequence in context: A249351 A123706 A322817 * A300547 A025452 A299202

Adjacent sequences: A194322 A194323 A194324 * A194326 A194327 A194328

Keyword

nonn,tabl

Author

Clark Kimberling, Aug 22 2011

Status

approved