A276324 Antidiagonal indices of Greedy Queens (see A065188).

1, 4, 5, 7, 8, 14, 15, 17, 18, 19, 20, 23, 24, 30, 31, 34, 35, 40, 41, 43, 44, 45, 46, 49, 50, 54, 56, 59, 60, 62, 63, 65, 68, 69, 72, 77, 78, 81, 82, 85, 86, 89, 90, 93, 94, 95, 96, 101, 103, 106, 108, 111, 113, 114, 116, 119, 120, 122, 123, 125, 127, 128

Offset: 1

Author

Alois P. Heinz, Aug 30 2016

Keywords

• nonn

Comments

a(n) is the index of the antidiagonal of the n-th queen.

Examples

			The first queen is in the first antidiagonal, the second queen is in the fourth antidiagonal, ... .  The antidiagonals with indices 2, 3, 6, 9, ... do not contain a queen:
:
:  Q//// ...
:  ///Q/ ...
:  /Q/// ...
:  ////Q ...
:  //Q// ...
:  ///// ...
:  .....
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A065188, A276325.