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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A228800 Number of 5Xn binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se. 1
 16, 34, 672, 3588, 37944, 272952, 2404290, 19027372, 158932704, 1292370748, 10646457736, 87161916810, 715678163448, 5868359033672, 48149246648488, 394944749457192, 3239968946054026, 26577801888192248, 218026471167729272 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 5 of A228796 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = a(n-1) +49*a(n-2) +107*a(n-3) -154*a(n-4) -404*a(n-5) +250*a(n-6) +472*a(n-7) -278*a(n-8) -168*a(n-9) +131*a(n-10) -9*a(n-11) -7*a(n-12) +a(n-13) EXAMPLE Some solutions for n=4 ..1..0..0..1....1..0..1..0....1..0..1..0....1..0..0..0....1..0..0..0 ..0..0..1..0....1..0..0..0....1..0..1..0....0..0..0..1....1..0..0..0 ..0..0..1..0....1..0..1..0....0..0..1..0....0..0..0..1....1..0..0..0 ..0..1..0..0....0..0..0..0....0..1..0..0....0..0..0..1....0..0..0..0 ..0..1..0..1....1..0..0..0....0..0..0..1....1..0..0..1....0..1..0..1 CROSSREFS Sequence in context: A153819 A185459 A279712 * A230943 A070589 A104910 Adjacent sequences: A228797 A228798 A228799 * A228801 A228802 A228803 KEYWORD nonn AUTHOR R. H. Hardin Sep 04 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 8 07:54 EDT 2023. Contains 363157 sequences. (Running on oeis4.)