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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A187135 Number of (n+1)X5 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces 1
 3249, 182214, 5755698, 201302208, 7020258336, 245891941002, 8616423081600, 301728175130790, 10570455159698376, 370183320491626512, 12967430068901756304, 454182945213312573174, 15908967753084162698652 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A187140 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for 4X5 ..0..2..0..0..1....1..2..2..2..0....0..0..1..1..2....1..0..1..0..2 ..0..0..0..2..2....1..1..0..0..0....0..1..1..1..0....0..0..1..1..2 ..0..0..1..1..0....0..0..0..1..1....0..0..1..1..0....0..0..1..1..2 ..0..0..0..1..1....0..0..0..2..1....0..0..1..0..0....0..0..0..2..2 CROSSREFS Sequence in context: A235412 A048421 A238254 * A185840 A251501 A106722 Adjacent sequences: A187132 A187133 A187134 * A187136 A187137 A187138 KEYWORD nonn AUTHOR R. H. Hardin Mar 05 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 February 24 16:16 EST 2024. Contains 370307 sequences. (Running on oeis4.)