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A166494
Irregular triangle T(n,k) = greatest common divisor of n-th row terms of A143753.
2
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
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
KEYWORD
nonn,tabf,easy
AUTHOR
Paul Curtz, Oct 15 2009
STATUS
approved