The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A187030 Number of 5-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions 0
 0, 0, 5120, 45152, 161256, 376248, 696992, 1121176, 1647008, 2273384, 3000304, 3827768, 4755776, 5784328, 6913424, 8143064, 9473248, 10903976, 12435248 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 5 of A187027 LINKS Table of n, a(n) for n=1..19. FORMULA Empirical: a(n) = 50272*n^2 - 328792*n + 534104 for n>7 EXAMPLE Some solutions for 4X4 ..0..0..0..0....0..5..0..0....0..0..4..0....0..0..0..0....0..0..0..0 ..0..5..0..0....0..0..0..1....0..3..0..5....1..2..0..3....0..3..5..4 ..0..1..2..0....0..4..3..0....0..2..0..0....5..0..0..0....0..0..2..0 ..0..4..3..0....0..2..0..0....1..0..0..0....0..4..0..0....0..0..0..1 CROSSREFS Sequence in context: A258729 A259425 A195653 * A237328 A186968 A195648 Adjacent sequences: A187027 A187028 A187029 * A187031 A187032 A187033 KEYWORD nonn AUTHOR R. H. Hardin Mar 02 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 6 23:00 EDT 2024. Contains 375002 sequences. (Running on oeis4.)