A194320 Triangular array: g(n,k)=number of fractional parts (i*sqrt(8)) in interval [(k-1)/n, k/n], for 1<=i<=2^n, 1<=k<=n.

2, 2, 2, 2, 3, 3, 2, 6, 3, 5, 6, 6, 7, 7, 6, 11, 10, 11, 11, 11, 10, 19, 18, 18, 18, 18, 19, 18, 31, 32, 32, 33, 31, 32, 32, 33, 56, 57, 58, 55, 57, 58, 56, 58, 57, 102, 102, 101, 104, 103, 102, 103, 102, 103, 102, 185, 186, 185, 186, 186, 186, 187, 186, 187, 187

Offset

1,1

Comments

See A194285.

Links

Table of n, a(n) for n=1..65.

Example

First eight rows:
2
2...2
2...3...3
2...6...3...5
6...6...7...7...6
11..10..11..11..11..10
19..18..18..18..18..19..18
31..32..32..33..31..32..32..33

Mathematica

r = Sqrt[8];
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, 2^n}]
TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]
Flatten[%]    (* A194320 *)

Crossrefs

Cf. A194285.

Sequence in context: A357427 A168557 A328204 * A231555 A120425 A104186

Adjacent sequences: A194317 A194318 A194319 * A194321 A194322 A194323

Keyword

nonn,tabl

Author

Clark Kimberling, Aug 22 2011

Status

approved