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 A208269 T(n,k)=Number of nXk 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors 7
 1, 2, 2, 4, 7, 4, 8, 25, 25, 8, 16, 89, 161, 89, 16, 32, 317, 1033, 1033, 317, 32, 64, 1129, 6631, 11929, 6631, 1129, 64, 128, 4021, 42563, 137845, 137845, 42563, 4021, 128, 256, 14321, 273205, 1592731, 2867739, 1592731, 273205, 14321, 256, 512, 51005, 1753657 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1.....2.......4.........8..........16............32..............64 ...2.....7......25........89.........317..........1129............4021 ...4....25.....161......1033........6631.........42563..........273205 ...8....89....1033.....11929......137845.......1592731........18403423 ..16...317....6631....137845.....2867739......59655167......1240971177 ..32..1129...42563...1592731....59655167....2234126207.....83670667271 ..64..4021..273205..18403423..1240971177...83670667271...5641457245533 .128.14321.1753657.212644499.25815151595.3133560234217.380372051615157 LINKS R. H. Hardin, Table of n, a(n) for n = 1..759 EXAMPLE Some solutions for n=4 k=3 ..0..1..0....0..0..1....0..0..0....0..1..0....0..0..0....0..0..0....0..0..0 ..0..0..0....0..1..0....0..1..1....1..0..1....0..1..1....1..0..1....1..0..1 ..1..1..1....1..1..1....1..0..1....0..0..0....1..0..1....0..1..1....1..0..1 ..1..0..0....0..0..0....0..1..0....1..1..0....0..1..1....0..0..1....1..0..1 CROSSREFS Column 2 is A007484(n-1) Sequence in context: A300881 A301491 A347940 * A184761 A270227 A162251 Adjacent sequences: A208266 A208267 A208268 * A208270 A208271 A208272 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 24 2012 STATUS approved

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Last modified September 26 07:08 EDT 2023. Contains 365653 sequences. (Running on oeis4.)