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

1,2

Comments

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

Links

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

Example

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// ...
:  ///// ...
:  .....

Crossrefs

Cf. A065188, A276325.

Sequence in context: A331840 A353438 A033164 * A226628 A335842 A140076

Adjacent sequences: A276321 A276322 A276323 * A276325 A276326 A276327

Keyword

nonn

Author

Alois P. Heinz, Aug 30 2016

Status

approved