The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A221774 Number of nX2 arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out left turns 1
 3, 35, 372, 3943, 41745, 441877, 4677106, 49504700, 523978608, 5546002679, 58701126836, 621316327261, 6576261708350, 69605796705162, 736735724582441, 7797906979453335, 82536181204107988, 873596110577329432 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A221776 LINKS R. H. Hardin, Table of n, a(n) for n = 1..25 FORMULA Empirical: a(n) = 19*a(n-1) -117*a(n-2) +338*a(n-3) -469*a(n-4) +191*a(n-5) +237*a(n-6) -183*a(n-7) -64*a(n-8) +14*a(n-9) EXAMPLE Some solutions for n=3 ..1..1....0..2....0..3....2..0....0..1....1..0....2..0....0..0....2..1....2..2 ..2..2....4..0....1..1....0..0....3..0....2..1....0..1....5..1....0..2....2..0 ..0..0....0..0....1..0....3..1....2..0....2..0....0..3....0..0....0..1....0..0 CROSSREFS Sequence in context: A260586 A089933 A086043 * A221687 A221223 A006767 Adjacent sequences: A221771 A221772 A221773 * A221775 A221776 A221777 KEYWORD nonn AUTHOR R. H. Hardin Jan 25 2013 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 June 13 05:35 EDT 2024. Contains 373366 sequences. (Running on oeis4.)