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A139549 Triangle read by rows: T(n,k) = if n>=2*k and n<2*k*A014963(k-1) then k else 1 T(n,0)=1.

%I A139549 #4 Jul 03 2016 00:15:23
%S A139549 1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,2,1,1,1,1,1,2,3,1,1,1,1,1,2,3,1,1,
%T A139549 1,1,1,1,1,3,4,1,1,1,1,1,1,1,3,4,1,1,1,1,1,1,1,1,3,4,5,1,1,1,1,1,1,1,
%U A139549 1,3,4,5,1,1,1,1,1,1,1,1,1,3,4,5,1,1,1,1,1,1,1,1,1,1,3,4,5,1,1,1,1,1,1,1,1
%N A139549 Triangle read by rows: T(n,k) = if n>=2*k and n<2*k*A014963(k-1) then k else 1 T(n,0)=1.
%C A139549 Row products give A139550.
%e A139549 Row products of the triangle are:
%e A139549 1 = 1
%e A139549 1*1 = 1
%e A139549 1*1*1 = 1
%e A139549 1*1*1*1 = 1
%e A139549 1*1*2*1*1 = 2
%e A139549 1*1*2*1*1*1 = 2
%e A139549 1*1*2*3*1*1*1 = 6
%e A139549 1*1*2*3*1*1*1*1 = 6
%e A139549 1*1*1*3*4*1*1*1*1 = 12
%o A139549 (Excel) =if(and(row()-1>=(column()-1)*2;row()-1 < A014963(k-1)*(column()-1)*2);column()-1;1)
%Y A139549 Cf. A139550, A139547, A003418.
%K A139549 nonn,tabl
%O A139549 0,13
%A A139549 _Mats Granvik_, Apr 27 2008