A274529 Total number of distinct numbers in the first n antidiagonals of infinite Sudoku-type array A269526.

1, 3, 4, 6, 6, 8, 10, 11, 13, 14, 16, 18, 18, 20, 20, 22, 22, 24, 26, 26, 27, 29, 30, 32, 35, 35, 38, 40, 40, 41, 43, 43, 43, 43, 47, 47, 47, 52, 53, 53, 54, 56, 58, 58, 60, 60, 60, 62, 64, 64, 67, 67, 68, 73, 74, 74, 74, 74, 77, 78, 78, 79, 80, 87, 87, 87, 87

Offset: 1

Author

Omar E. Pol, Jun 30 2016

Keywords

• nonn

Comments

a(n) is also the total number of distinct numbers in the first n antidiagonals of the square array A274528.

Examples

			For n = 3, the first three antidiagonals of the square array A269526 are [1], [3, 2], [2, 4, 3]. The first four positive integers are in the list, so a(3) = 4.
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A269526, A274528, A274530.

Row lengths of A274534.

A275883 is closely related but a different sequence.

Extensions

More terms from Alois P. Heinz, Jun 30 2016