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A097287 Rectangular array T by antidiagonals: T(n,k) = rank of n where (n,k) occurs in A097285, for distinct n,k and T(n,n)=0 for all n.

%I A097287 #3 Mar 30 2012 18:57:05
%S A097287 0,1,2,3,0,6,7,5,4,12,13,9,0,8,20,21,15,11,10,14,30,31,23,17,0,16,22,
%T A097287 42,43,33,25,19,18,24,32,56,57,45,35,27,0,26,34,44,72,73,59,47,37,29,
%U A097287 28,36,46,58,90,91,75,61,49,39,0,38,48,60,74,110,111,93,77,63,51,41,40,50,62
%N A097287 Rectangular array T by antidiagonals: T(n,k) = rank of n where (n,k) occurs in A097285, for distinct n,k and T(n,n)=0 for all n.
%C A097287 Every odd number occurs exactly once above the diagonal and every even, exactly once below the diagonal.
%e A097287 Northwest corner:
%e A097287 0 1 3 7 13
%e A097287 2 0 5 9 15
%e A097287 6 4 0 11 17
%e A097287 12 8 10 0 19
%e A097287 T(1,4)=7 because in A097285 the unique occurrence of 1,4 is
%e A097287 in positions 7,8.
%K A097287 nonn,tabl
%O A097287 1,3
%A A097287 _Clark Kimberling_, Aug 05 2004