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A139551 Triangle read by rows: T(n,k) = if n>=3*k and n<3*k*A014963(k-1) then k else 1 T(n,0)=1.

%I A139551 #4 Jul 03 2016 00:15:23
%S A139551 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,2,1,1,1,
%T A139551 1,1,1,1,2,1,1,1,1,1,1,1,1,2,3,1,1,1,1,1,1,1,1,2,3,1,1,1,1,1,1,1,1,1,
%U A139551 2,3,1,1,1,1,1,1,1,1,1,1,1,3,4,1,1,1,1,1,1,1,1,1,1,1,3,4,1,1,1,1,1,1,1,1,1
%N A139551 Triangle read by rows: T(n,k) = if n>=3*k and n<3*k*A014963(k-1) then k else 1 T(n,0)=1.
%C A139551 Row products give A139552.
%e A139551 Row products of the triangle are:
%e A139551 1 = 1
%e A139551 1*1 = 1
%e A139551 1*1*1 = 1
%e A139551 1*1*1*1 = 1
%e A139551 1*1*1*1*1 = 1
%e A139551 1*1*1*1*1*1 = 1
%e A139551 1*1*2*1*1*1*1 = 2
%e A139551 1*1*2*1*1*1*1*1 = 2
%e A139551 1*1*2*1*1*1*1*1*1 = 2
%o A139551 (Excel) =if(and(row()-1>=(column()-1)*3;row()-1 < A014963(k-1)*(column()-1)*3);column()-1;1)
%Y A139551 Cf. A139552, A139547, A003418.
%K A139551 nonn,tabl
%O A139551 0,24
%A A139551 _Mats Granvik_, Apr 27 2008