This site is supported by donations to The OEIS Foundation.

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A185573 Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 1
 3392, 125664, 4649320, 173985944, 6508370600, 243047375432, 9075956889192, 339043219347960, 12665293283911784, 473089808175134024, 17671406269801247592, 660095110422452092856, 24657097179457297605704 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A185575 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 EXAMPLE Some solutions for 5X3 ..0..0..0....0..2..0....0..0..0....2..0..2....2..0..2....2..2..2....2..0..2 ..0..0..2....0..2..3....0..0..1....0..2..2....0..2..2....2..0..0....0..0..1 ..0..2..2....2..2..2....0..2..0....2..2..2....0..0..0....0..0..0....2..2..2 ..3..2..3....0..0..2....0..2..3....2..2..3....3..0..2....3..0..2....2..2..0 ..1..2..3....3..3..3....2..1..0....2..0..3....3..1..2....3..3..3....3..3..3 CROSSREFS Sequence in context: A043671 A262176 A172788 * A185926 A221009 A226667 Adjacent sequences:  A185570 A185571 A185572 * A185574 A185575 A185576 KEYWORD nonn AUTHOR R. H. Hardin Jan 31 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 | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.