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%I #3 Mar 30 2012 18:57:05
%S 1,2,3,5,4,6,8,11,7,9,13,16,12,10,14,18,21,23,17,15,19,25,28,30,24,22,
%T 20,26,32,35,37,39,31,29,27,33,41,44,46,48,40,38,36,34,42,50,53,55,57,
%U 59,49,47,45,43,51,61,64,66,68,70,60,58,56,54,52,62,72,75,77,79,81,83
%N Rectangular array T, by antidiagonals: T(n,k) = rank of k-th n in A097289.
%C As a sequence this is a permutation of the natural numbers.
%e Northwest corner:
%e 1 2 5 8
%e 3 4 11 16
%e 6 7 12 23
%e 9 10 17 24
%Y Cf. A098289.
%K nonn,tabl
%O 1,2
%A _Clark Kimberling_, Aug 05 2004