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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A188561 Number of nX3 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally 1
 7, 49, 247, 1383, 7722, 42712, 237116, 1315783, 7300042, 40505756, 224748056, 1247024929, 6919195733, 38391539384, 213017628693, 1181940415631, 6558063227535, 36387785244039, 201899687047572, 1120251845376251 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A188567 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 FORMULA Empirical: a(n)=a(n-1)+11*a(n-2)+60*a(n-3)+89*a(n-4)+107*a(n-5)-75*a(n-6)-50*a(n-7)-157*a(n-8)+184*a(n-9)-91*a(n-10)+86*a(n-11)-35*a(n-12)+13*a(n-13)-14*a(n-14)+4*a(n-15) EXAMPLE Some solutions for 4X3 ..0..0..0....0..1..0....0..0..0....0..0..0....0..0..0....0..1..1....1..0..0 ..0..1..0....0..1..0....0..1..1....1..1..0....1..1..0....1..1..0....0..1..1 ..1..1..0....1..0..1....1..0..1....0..0..1....0..1..1....0..0..1....1..1..0 ..0..0..1....0..0..1....0..0..0....1..1..0....1..0..0....0..0..1....1..0..1 CROSSREFS Sequence in context: A207089 A224150 A094430 * A225013 A228459 A203059 Adjacent sequences:  A188558 A188559 A188560 * A188562 A188563 A188564 KEYWORD nonn AUTHOR R. H. Hardin Apr 04 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 12 19:39 EDT 2022. Contains 356077 sequences. (Running on oeis4.)