A330709 Two-column table read by rows: pairs (i,j) in order sorted from the left.

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, 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, 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

Offset: 0

Author

Mehmet A. Ates, Jun 08 2020

Keywords

• nonn
• easy

Links

• Mehmet A. Ates, Table of n, a(n) for n = 0..1500

Crossrefs

a(2n)= A003056(n),

a(2n+1)= A002262(n).

Cf. A331195.

Programs

Mathematica

TwoDVectors = List[];
SeqSize = 20;
For[i = 0, i <= SeqSize, i++,
  For[j = 0, j <= i, j++,
    AppendTo[TwoDVectors, {i, j}]
  ]
];
Flatten[TwoDVectors]