A166139 - OEIS

%I #4 Mar 30 2012 18:53:09

%S 1,2,1,3,0,1,1,2,0,1,5,0,0,0,1,1,3,2,0,0,1,7,0,0,0,0,0,1,1,1,0,2,0,0,

%T 0,1,1,0,3,0,0,0,0,0,1,1,5,0,0,2,0,0,0,0,1,11,0,0,0,0,0,0,0,0,0,1,1,1,

%U 1,3,0,2,0,0,0,0,0,1,13,0,0,0,0,0,0,0,0,0,0,0,1

%N Triangle T(n,k) read by rows. A080305(A126988(n,k)) if k|n, 0 otherwise.

%e Table begins:

%e 1

%e 2,1

%e 3,0,1

%e 1,2,0,1

%e 5,0,0,0,1

%e 1,3,2,0,0,1

%e 7,0,0,0,0,0,1

%e 1,1,0,2,0,0,0,1

%e 1,0,3,0,0,0,0,0,1

%e 1,5,0,0,2,0,0,0,0,1

%e 11,0,0,0,0,0,0,0,0,0,1

%e 1,1,1,3,0,2,0,0,0,0,0,1

%e 13,0,0,0,0,0,0,0,0,0,0,0,1

%Y Cf. A080305, row products A166140.

%K nonn,tabl

%O 1,2

%A _Mats Granvik_, Oct 08 2009