%I
%S 0,0,1,1,2,2,0,3,4,3,1,3,5,6,4,2,4,6,7,8,5,0,5,7,9,9,10,6,1,4,8,10,12,
%T 11,12,7,2,5,8,11,13,15,13,14,8,3,6,9,12,14,16,18,15,16,9,0,7,10,13,
%U 16,17,19,21,17,18,10,1,5,11,14,17,20,20,22,24,19,20,11,2,6,10,15,18,21
%N Table of arithmetic sequences, by antidiagonals.
%e When written as a rectangular array, the northwest corner is
%e 0 1 2 3 4 5
%e 0 2 4 6 8 10
%e 1 3 5 7 9 11
%e 0 3 6 9 12 15
%e 1 4 7 10 13 16
%e 2 5 8 11 14 17
%K nonn,tabl
%O 0,5
%A _Clark Kimberling_, Nov 01 2002
