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A204779 Number of (n+2)X7 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order 1
537665796, 465761252736, 387664140116880, 323760110018338584, 270709468240858645320, 226195161314062528733400, 189028841218044281822571840, 157967089903037319532707782016 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A204782

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..13

EXAMPLE

Some solutions for n=3

..0..1..2..1..2..0..0....0..0..0..0..1..0..2....0..0..1..0..0..1..0

..1..2..1..1..0..1..0....1..1..0..2..1..0..1....2..0..1..2..2..0..1

..1..0..0..2..2..2..2....0..2..0..1..2..1..0....0..2..1..2..1..0..1

..2..1..0..2..0..1..2....2..0..2..1..0..1..2....1..2..0..2..1..0..2

..2..1..0..1..2..1..2....1..2..2..1..0..2..0....2..0..2..0..1..1..0

CROSSREFS

Sequence in context: A135977 A011579 A122970 * A278201 A172619 A090468

Adjacent sequences:  A204776 A204777 A204778 * A204780 A204781 A204782

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 19 2012

STATUS

approved

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Last modified September 23 02:41 EDT 2021. Contains 347609 sequences. (Running on oeis4.)