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A206659 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order 9
102, 390, 390, 1517, 1769, 1517, 5805, 8374, 8374, 5805, 22346, 39928, 50529, 39928, 22346, 86251, 190577, 305347, 305347, 190577, 86251, 332419, 910169, 1839784, 2324028, 1839784, 910169, 332419, 1281181, 4345011, 11172263, 17859249 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....102......390......1517.......5805........22346.........86251

.....390.....1769......8374......39928.......190577........910169

....1517.....8374.....50529.....305347......1839784......11172263

....5805....39928....305347....2324028.....17859249.....138177925

...22346...190577...1839784...17859249....175401820....1731487818

...86251...910169..11172263..138177925...1731487818...21966491761

..332419..4345011..67724531.1063970081..17082121522..278034719471

.1281181.20745372.410177144.8203665888.168628106667.3516414118117

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A204860 A277459 A127655 * A206652 A158127 A231361

Adjacent sequences:  A206656 A206657 A206658 * A206660 A206661 A206662

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 11 2012

STATUS

approved

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Last modified October 31 00:25 EDT 2020. Contains 338095 sequences. (Running on oeis4.)