A166494 Irregular triangle T(n,k) = greatest common divisor of n-th row terms of A143753.

3, 8, 5, 5, 12, 12, 7, 7, 7, 16, 16, 16, 9, 9, 9, 9, 20, 20, 20, 20, 11, 11, 11, 11, 11, 24, 24, 24, 24, 24, 13, 13, 13, 13, 13, 13, 28, 28, 28, 28, 28, 28, 15, 15, 15, 15, 15, 15, 15, 32, 32, 32, 32, 32, 32, 32, 17, 17, 17, 17, 17, 17, 17, 17, 36, 36, 36, 36, 36, 36, 36, 36, 19, 19, 19, 19, 19, 19, 19, 19, 19, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 21, 21, 21, 21, 21, 21, 21

Offset

1,1

Links

Table of n, a(n) for n=1..98.

Formula

T(n,k) = A022998(n+2).

Example

3;
8;
5,5;
12,12;
7,7,7;
16,16,16;

Crossrefs

Cf. A166866.

Sequence in context: A200699 A113813 A110944 * A140392 A140385 A078361

Adjacent sequences: A166491 A166492 A166493 * A166495 A166496 A166497

Keyword

nonn,tabf,easy

Author

Paul Curtz, Oct 15 2009

Status

approved