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 A207426 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically 12
 2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 15, 81, 114, 81, 14, 25, 225, 361, 351, 196, 21, 40, 625, 1425, 1521, 1162, 441, 31, 64, 1600, 5625, 8463, 6889, 3633, 961, 46, 104, 4096, 20550, 47089, 55361, 29929, 11067, 2116, 68, 169, 10816, 75076, 241087, 444889, 341329 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ..2....4.....6......9.......15........25.........40...........64...........104 ..4...16....36.....81......225.......625.......1600.........4096.........10816 ..6...36...114....361.....1425......5625......20550........75076........282494 ..9...81...351...1521.....8463.....47089.....241087......1234321.......6520459 .14..196..1162...6889....55361....444889....3210938.....23174596.....174570082 .21..441..3633..29929...341329...3892729...39698733....404854641....4315250265 .31..961.11067.127449..2048823..32936121..474552171...6837470721..102807481767 .46.2116.33994.546121.12436631.283215241.5755114104.116947584576.2485504480392 LINKS R. H. Hardin, Table of n, a(n) for n = 1..365 EXAMPLE Some solutions for n=4 k=3 ..0..1..1....1..1..0....0..1..1....1..1..0....1..0..0....0..1..1....1..1..1 ..1..1..0....0..0..1....0..1..1....1..0..1....0..0..1....1..0..0....1..1..1 ..1..1..1....0..1..1....0..1..1....1..0..1....1..0..1....1..0..1....1..1..1 ..1..0..1....0..1..1....0..1..1....0..0..1....1..0..0....1..0..1....1..1..1 CROSSREFS Column 1 is A038718(n+2) Column 2 is A207069 Row 1 is A006498(n+2) Row 2 is A189145(n+2) Sequence in context: A208118 A207908 A208039 * A207741 A207949 A207346 Adjacent sequences:  A207423 A207424 A207425 * A207427 A207428 A207429 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 17 2012 STATUS approved

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Last modified May 10 22:16 EDT 2021. Contains 343780 sequences. (Running on oeis4.)