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A204780 Number of (n+2)X8 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
11475976536, 25096321973400, 51989763458957400, 108409087458981913446, 226195161314062528733400, 471676730359800501277345350, 983786658795358884417033843750, 2051831834602650677018156435696664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A204782

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..9

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A290390 A183709 A247312 * A333131 A172587 A172581

Adjacent sequences:  A204777 A204778 A204779 * A204781 A204782 A204783

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 19 2012

STATUS

approved

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Last modified September 17 06:16 EDT 2021. Contains 347478 sequences. (Running on oeis4.)