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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A206978 Number of 6Xn 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 0
 3353, 11242609, 20061347530, 35350565625684, 63023113538493420 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A206974 LINKS Table of n, a(n) for n=1..5. EXAMPLE Some solutions for n=4 ..0..2..0..3....2..1..2..3....3..1..1..1....0..0..3..0....2..0..0..2 ..0..0..2..1....0..1..2..0....3..3..3..1....1..1..3..0....0..2..2..0 ..2..0..2..1....0..1..0..0....3..1..3..3....2..2..1..0....1..0..2..0 ..0..2..0..3....2..0..3..0....3..1..1..1....3..2..2..0....0..0..0..2 ..2..1..0..3....2..0..3..2....3..3..3..0....2..0..0..0....0..2..3..3 ..1..0..2..0....1..2..0..2....1..1..1..1....1..2..3..2....3..2..3..0 CROSSREFS Sequence in context: A251817 A216488 A203782 * A206972 A206575 A207580 Adjacent sequences: A206975 A206976 A206977 * A206979 A206980 A206981 KEYWORD nonn AUTHOR R. H. Hardin Feb 14 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 2 11:50 EDT 2023. Contains 365833 sequences. (Running on oeis4.)