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%I #29 Aug 06 2020 15:44:47
%S 0,0,1,0,1,1,2,0,2,1,2,2,3,0,3,1,3,2,3,3,4,0,4,1,4,2,4,3,4,4,5,0,5,1,
%T 5,2,5,3,5,4,5,5,6,0,6,1,6,2,6,3,6,4,6,5,6,6,7,0,7,1,7,2,7,3,7,4,7,5,
%U 7,6,7,7,8,0,8,1,8,2,8,3,8,4,8,5,8,6,8,7,8,8,9,0,9,1,9,2,9,3,9,4,9,5,9,6,9,7,9,8,9,9,10,0
%N Two-column table read by rows: pairs (i,j) in order sorted from the left.
%H Mehmet A. Ates, <a href="/A330709/b330709.txt">Table of n, a(n) for n = 0..1500</a>
%t TwoDVectors = List[];
%t SeqSize = 20;
%t For[i = 0, i <= SeqSize, i++,
%t For[j = 0, j <= i, j++,
%t AppendTo[TwoDVectors, {i, j}]
%t ]
%t ];
%t Flatten[TwoDVectors]
%Y a(2n)= A003056(n),
%Y a(2n+1)= A002262(n).
%Y Cf. A331195.
%K nonn,easy
%O 0,7
%A _Mehmet A. Ates_, Jun 08 2020
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