The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A207195 Number of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column 0
 3, 81, 12534, 12539372, 82169395789, 3560964505762489, 1025697542018363494742, 1959801984026721315634303343 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A207201 LINKS EXAMPLE Some solutions for n=4 ..0..2..2..2....0..2..0..2....1..0..2..0....0..2..2..0....2..2..2..1 ..1..1..0..2....2..2..0..2....1..0..0..0....1..0..0..0....2..1..0..2 ..2..0..1..0....2..0..2..2....0..2..0..0....2..2..1..2....2..0..0..2 ..1..2..0..2....0..2..1..0....2..0..0..0....0..0..2..0....1..0..2..2 CROSSREFS Sequence in context: A206726 A207352 A207983 * A207215 A207544 A207311 Adjacent sequences:  A207192 A207193 A207194 * A207196 A207197 A207198 KEYWORD nonn AUTHOR R. H. Hardin Feb 15 2012 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 16 18:21 EDT 2021. Contains 343050 sequences. (Running on oeis4.)