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%I #18 Feb 22 2024 07:54:39
%S 0,1,0,1,2,0,1,2,3,0,1,2,3,4,0,1,2,3,4,5,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
%T 7,0,1,2,3,4,5,6,7,8,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,10,0,1,2,
%U 3,4,5,6,7,8,9,10,11,0,1,2,3,4,5,6,7,8,9,10,11,12,0
%N Triangular array T read by rows: T(n,k)=k mod n, for k=1,2,...,n, n=1,2,...
%F G.f.: x^2*y/((1 - x)*(1 - x*y)^2). - _Stefano Spezia_, Feb 21 2024
%e Triangle begins:
%e 0;
%e 1, 0;
%e 1, 2, 0;
%e 1, 2, 3, 0;
%e 1, 2, 3, 4, 0;
%e ...
%t Flatten[Table[Mod[k,n],{n,15},{k,n}]] (* _Harvey P. Dale_, Mar 21 2012 *)
%Y As a sequence, essentially same as A002262.
%K nonn,tabl
%O 1,5
%A _Clark Kimberling_