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 A206974 T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 12
 4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 882, 53824, 180294, 53824, 882, 3353, 777924, 8685113, 8688551, 777924, 3353, 12747, 11242609, 419203246, 1391081032, 417476451, 11242609, 12747, 48460, 162486009, 20232472915, 223912418544 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....4.........16.............61..............232...............882 ....16........256...........3721............53824............777924 ....61.......3721.........180294..........8685113.........419203246 ...232......53824........8688551.......1391081032......223912418544 ...882.....777924......417476451.....221715091199...118749552817647 ..3353...11242609....20061347530...35350565625684.63023113538493420 .12747..162486009...964232197214.5637076828393230 .48460.2348371600.46342878010975 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=4 k=3 ..2..0..3....2..0..1....3..1..1....2..1..2....1..1..0....1..0..0....1..3..3 ..0..2..0....0..2..0....1..3..3....3..0..1....3..2..3....0..0..3....1..1..3 ..3..1..1....1..2..1....3..1..3....2..0..0....3..0..0....2..2..1....0..1..0 ..2..0..2....3..0..0....1..3..3....1..3..0....2..1..3....0..1..3....0..1..0 CROSSREFS Column 1 and row 1 are A206570 Column 2 and row 2 are A206571 Sequence in context: A269201 A269289 A267933 * A206577 A207582 A207057 Adjacent sequences: A206971 A206972 A206973 * A206975 A206976 A206977 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 14 2012 STATUS approved

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Last modified June 5 11:42 EDT 2023. Contains 363136 sequences. (Running on oeis4.)