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A207368 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically 11

%I #5 Mar 31 2012 12:37:17

%S 2,4,4,6,16,6,9,36,36,9,13,81,90,81,12,18,169,252,225,144,16,25,324,

%T 624,784,420,256,20,34,625,1350,2304,1736,784,400,25,46,1156,3025,

%U 5625,5856,3844,1260,625,30,62,2116,6256,14641,15525,14884,7130,2025,900,36,83

%N T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically

%C Table starts

%C ..2...4....6.....9....13.....18.....25......34......46.......62.......83

%C ..4..16...36....81...169....324....625....1156....2116.....3844.....6889

%C ..6..36...90...252...624...1350...3025....6256...12788....25792....50630

%C ..9..81..225...784..2304...5625..14641...33856...77284...173056...372100

%C .12.144..420..1736..5856..15525..45738..115368..287174...700960..1620770

%C .16.256..784..3844.14884..42849.142884..393129.1067089..2839225..7059649

%C .20.400.1260..7130.31110..95220.353808.1047717.3056647..8773795.23208895

%C .25.625.2025.13225.65025.211600.876096.2792241.8755681.27112849.76300225

%H R. H. Hardin, <a href="/A207368/b207368.txt">Table of n, a(n) for n = 1..684</a>

%e Some solutions for n=4 k=3

%e ..1..1..1....1..1..0....0..0..1....0..0..1....1..1..1....0..1..0....1..1..0

%e ..0..1..0....0..0..1....1..1..0....1..1..1....1..1..1....0..1..0....1..0..1

%e ..1..1..1....0..1..0....0..0..1....0..0..1....0..1..0....0..1..0....1..0..0

%e ..0..1..0....0..0..1....0..1..0....0..1..0....0..1..0....0..1..0....0..0..1

%Y Column 1 is A002620(n+2)

%Y Column 2 is A030179(n+2)

%Y Row 1 is A171861(n+1)

%Y Row 2 is A207025

%Y Row 3 is A207026

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Feb 17 2012

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Last modified July 13 04:46 EDT 2024. Contains 374267 sequences. (Running on oeis4.)