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A202647 T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 111 in rows, columns and nw-to-se diagonals 9
66, 172, 172, 462, 530, 462, 1278, 1766, 1766, 1278, 3448, 5948, 7432, 5948, 3448, 9394, 19880, 31560, 31560, 19880, 9394, 25526, 66924, 134338, 171362, 134338, 66924, 25526, 69336, 224940, 572940, 923788, 923788, 572940, 224940, 69336 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....66.....172.......462.......1278.........3448..........9394..........25526

....172.....530......1766.......5948........19880.........66924.........224940

....462....1766......7432......31560.......134338........572940........2443538

...1278....5948.....31560.....171362.......923788.......5002208.......27264078

...3448...19880....134338.....923788......6324344......43812822......304200608

...9394...66924....572940....5002208.....43812822.....386981422.....3423531924

..25526..224940...2443538...27264078....304200608....3423531924....38841628112

..69336..755816..10435120..148104786...2106754926...30374643896...440204384164

.188418.2541276..44531700..804922608..14642559872..269698672006..4991946563700

.511960.8543094.190115264.4383730776.101786323802.2394697806290.56832465909314

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..198

EXAMPLE

Some solutions for n=3 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A044779 A249284 A255102 * A202640 A074873 A205817

Adjacent sequences:  A202644 A202645 A202646 * A202648 A202649 A202650

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 22 2011

STATUS

approved

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Last modified May 21 05:37 EDT 2022. Contains 353889 sequences. (Running on oeis4.)