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 A252695 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and in every diagonal and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order 9
 46, 96, 96, 148, 142, 148, 394, 204, 204, 394, 707, 519, 134, 519, 707, 1982, 1047, 407, 407, 1047, 1982, 3703, 2719, 291, 1480, 291, 2719, 3703, 10772, 6483, 881, 2048, 2048, 881, 6483, 10772, 20437, 16887, 727, 6246, 568, 6246, 727, 16887, 20437, 60042 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ....46.....96..148....394...707...1982...3703...10772..20437...60042..115343 ....96....142..204....519..1047...2719...6483...16887..42825..111655..288975 ...148....204..134....407...291....881....727....2067...2067....5331....6491 ...394....519..407...1480..2048...6246..12740...35128..84680..225000..573968 ...707...1047..291...2048...568...4138...1276....8608...3244...18576....9144 ..1982...2719..881...6246..4138..18940..25382...82842.168598..474106.1144322 ..3703...6483..727..12740..1276..25382...2592...51060...5944..103716...15052 .10772..16887.2067..35128..8608..82842..51060..255112.337036.1125816.2286048 .20437..42825.2067..84680..3244.168598...5944..337036..12400..675756...28596 .60042.111655.5331.225000.18576.474106.103716.1125816.675756.3480808.4572432 LINKS R. H. Hardin, Table of n, a(n) for n = 1..480 FORMULA Empirical for column k: k=1: [linear recurrence of order 13] for n>14 k=2: [order 10] for n>11 k=3: [order 9] for n>10 k=4: [order 10] for n>11 k=5: [order 9] for n>10 k=6: [order 10] for n>11 k=7: [order 9] for n>10 EXAMPLE Some solutions for n=4 k=4 ..0..1..0..1..0..1....0..1..0..1..0..1....0..1..1..2..2..1....0..1..1..0..0..1 ..2..3..2..3..2..3....2..3..2..3..2..3....2..3..3..0..0..3....2..3..3..2..2..3 ..2..3..2..3..2..3....2..3..2..3..2..3....2..1..1..2..2..3....2..1..1..0..0..1 ..0..1..0..1..0..1....0..1..0..1..0..1....0..3..3..0..0..1....0..3..3..2..2..1 ..0..1..0..1..0..1....0..1..0..1..0..1....2..1..1..2..2..1....2..1..1..0..0..3 ..2..2..3..2..3..2....3..3..2..2..3..2....2..3..3..0..0..3....2..3..3..2..2..3 CROSSREFS Sequence in context: A260568 A044184 A044565 * A252688 A358897 A119417 Adjacent sequences: A252692 A252693 A252694 * A252696 A252697 A252698 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 20 2014 STATUS approved

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Last modified June 22 11:27 EDT 2024. Contains 373570 sequences. (Running on oeis4.)