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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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 22 2011
STATUS
approved

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Last modified June 18 07:40 EDT 2024. Contains 373469 sequences. (Running on oeis4.)