A199134 Indices of Greedy Queens (see A065188) below main diagonal.

4, 5, 10, 11, 13, 15, 20, 21, 26, 27, 29, 31, 34, 38, 40, 42, 43, 49, 50, 54, 56, 58, 59, 64, 67, 69, 71, 75, 77, 78, 80, 85, 86, 90, 91, 95, 99, 101, 102, 104, 108, 111, 113, 116, 117, 120, 123, 128, 129, 132, 133, 136, 141, 143, 144, 146, 151, 152, 154, 156, 160

Offset: 1

Author

Wouter Meeussen, Nov 04 2011

Keywords

• nonn

Comments

The word "below" in the definition is somewhat ambiguous. More precisely, this is the list of n such that A065188(n) < n. - N. J. A. Sloane, Aug 18 2016

For Greedy Queens that do not attack along antidiagonals, the analogous sequence of indices is A026352.

Examples

			Greedy Queens take positions (1,1) (2,3) (3,5) (4,2) (5,4) (6,9) ... and the 4th and 5th are below the main diagonal, so a(1)=4 and a(2)=5.
		

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..19098

Crossrefs

Cf. A065188, A026352, A275893 (another version).

A275884 is the complementary sequence.

For runs see A275885, A275886.

Programs

Mathematica

<2+Floor[k*GoldenRatio],And[l>3+Floor[k/GoldenRatio],l