A194342 Triangular array: g(n,k)=number of fractional parts (i*r) in interval [(k-1)/n, k/n], for 1<=i<=2n, 1<=k<=n, r=3-e.

2, 2, 2, 2, 2, 2, 1, 3, 2, 2, 1, 2, 3, 1, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 3, 2, 2, 2, 2, 1, 3, 2, 2, 2, 1, 3, 2, 2, 1, 3, 2, 1, 3, 3, 1, 2, 2, 1, 2, 3, 2, 2, 2, 2, 2, 2, 1, 3, 1, 2, 2, 2, 3, 1, 3, 2, 1, 3, 2, 2, 2, 2, 2, 2, 3, 1, 3, 1, 3, 1, 3, 1, 2, 2, 2, 1, 3, 2, 2, 1, 3

Offset

1,1

Comments

See A194285.

Links

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

Example

First eight rows:
2
2..2
2..2..2
1..3..2..2
1..2..3..1..3
2..2..2..2..2..2
2..2..2..2..2..2..2
1..2..2..2..3..2..2..2

Mathematica

r = 3-E;
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, 2n}]
TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]
Flatten[%]    (* A194342 *)

Crossrefs

Cf. A194285.

Sequence in context: A378123 A306459 A297788 * A230410 A044925 A376680

Adjacent sequences: A194339 A194340 A194341 * A194343 A194344 A194345

Keyword

nonn,tabl

Author

Clark Kimberling, Aug 22 2011

Status

approved