%I
%S 0,0,1,0,2,1,0,3,1,2,0,4,1,3,2,0,5,1,4,2,3,0,6,1,5,2,4,3,
%T 0,7,1,6,2,5,3,4,0,8,1,7,2,6,3,5,4,0,9,1,8,2,7,3,6,4,5,0,
%U 10,1,9,2,8,3,7,4,6,5
%N Triangle T(n,k) read by brows: T(n,2k)=k, T(n,2k+1) = kn, for 0<=k<=n.
%C In each row, two bisections count up.
%C Mentioned in A124072. [How/where? R. J. Mathar, Jul 07 2011]
%e 0;
%e 0, 1;
%e 0, 2, 1;
%e 0, 3, 1, 2;
%e 0, 4, 1, 3, 2;
%e 0, 5, 1, 4, 2, 3;
%e 0, 6, 1, 5, 2, 4, 3;
%p A141543 := proc(n,k) if type(k,'even') then k/2; else (k1)/2n ; end if; end proc:
%p seq(seq(A141543(n,k),k=0..n),n=0..15) ; # R. J. Mathar, Jul 07 2011
%t Flatten[Table[If[EvenQ[k],k/2,(k1)/2n],{n,0,10},{k,0,n}]] (* _Harvey P. Dale_, Sep 24 2013 *)
%K sign,easy,tabl
%O 0,5
%A _Paul Curtz_, Aug 16 2008
