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

Author

Paul Curtz, Oct 15 2009

Keywords

• nonn
• tabf
• easy

Examples

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

Crossrefs

Cf. A166866.

Formula

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