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A204863 Number of (n+2)X6 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..1 introduced in row major order 2
5352, 31034, 192080, 1193734, 7620885, 48713811, 309173896, 1968871406, 12569403973, 79966055788, 509576759394, 3248460700788, 20690736697342, 131840896177319, 840189826426419, 5352962842116701, 34108714839068907 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A204867

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..0..0..0..0..1..0....0..1..1..1..0..1....0..0..1..1..1..1....0..1..1..1..1..1

..1..0..0..1..0..0....0..1..1..0..1..1....1..1..1..1..0..0....1..0..1..0..1..1

..1..1..1..1..1..0....0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0

..0..0..1..1..0..0....0..1..1..0..0..1....1..0..0..1..1..0....1..1..1..1..1..1

..0..0..0..0..1..0....1..1..1..1..1..1....0..1..1..1..1..0....0..0..1..1..0..1

CROSSREFS

Sequence in context: A234213 A187435 A023939 * A259893 A206681 A203962

Adjacent sequences:  A204860 A204861 A204862 * A204864 A204865 A204866

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 20 2012

STATUS

approved

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Last modified July 13 04:01 EDT 2020. Contains 335673 sequences. (Running on oeis4.)