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 A183322 T(n,k)=Number of nXk binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it 10
 2, 3, 3, 5, 6, 5, 8, 13, 13, 8, 13, 27, 43, 27, 13, 21, 57, 124, 124, 57, 21, 34, 119, 377, 480, 377, 119, 34, 55, 250, 1109, 1975, 1975, 1109, 250, 55, 89, 523, 3305, 7833, 11385, 7833, 3305, 523, 89, 144, 1097, 9767, 31428, 61755, 61755, 31428, 9767, 1097, 144 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Empirical: column k has a 2^k order linear recurrence (verified through k=6) Table starts ...2....3.....5.......8.......13.........21..........34...........55 ...3....6....13......27.......57........119.........250..........523 ...5...13....43.....124......377.......1109........3305.........9767 ...8...27...124.....480.....1975.......7833.......31428.......125103 ..13...57...377....1975....11385......61755......343035......1872913 ..21..119..1109....7833....61755.....455509.....3437801.....25528515 ..34..250..3305...31428...343035....3437801....35629548....360327392 ..55..523..9767..125103..1872913...25528515...360327392...4963103592 ..89.1097.28959..498825.10288475..190243099..3674032121..68795107993 .144.2297.85677.1985956.56225061.1412491505.37171418048.947461430557 LINKS R. H. Hardin, Table of n, a(n) for n = 1..611 EXAMPLE Some solutions for 7X3 ..1..1..1....0..0..0....1..1..0....1..1..0....0..0..0....0..0..1....0..0..0 ..1..1..1....0..0..0....1..1..1....1..1..0....1..1..1....1..1..1....0..1..1 ..0..0..1....0..0..1....1..1..1....0..0..0....1..1..1....1..1..1....0..1..1 ..1..1..1....0..1..1....1..1..0....1..1..0....1..1..0....0..0..1....1..1..1 ..1..1..1....1..1..0....0..0..0....1..1..0....1..1..0....0..1..1....1..1..1 ..0..0..1....1..1..0....0..0..1....0..1..1....1..1..0....1..1..1....0..1..1 ..1..1..0....1..1..1....1..1..1....1..1..1....1..1..1....1..1..0....0..1..1 CROSSREFS Sequence in context: A207292 A064464 A094585 * A295918 A296834 A242642 Adjacent sequences:  A183319 A183320 A183321 * A183323 A183324 A183325 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 03 2011 STATUS approved

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Last modified June 26 10:52 EDT 2022. Contains 354881 sequences. (Running on oeis4.)