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A222649 T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order 7

%I #4 Feb 27 2013 08:43:10

%S 1,1,1,1,1,1,4,3,3,4,5,12,5,12,5,14,38,61,61,38,14,17,124,157,457,157,

%T 124,17,70,430,1972,3411,3411,1972,430,70,89,1530,5625,31487,25724,

%U 31487,5625,1530,89,326,5378,66494,317655,640355,640355,317655,66494,5378,326

%N T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order

%C Table starts

%C ....1......1........1...........4..............5..............14

%C ....1......1........3..........12.............38.............124

%C ....1......3........5..........61............157............1972

%C ....4.....12.......61.........457...........3411...........31487

%C ....5.....38......157........3411..........25724..........640355

%C ...14....124.....1972.......31487.........640355........14332759

%C ...17....430.....5625......317655........5969486.......368332772

%C ...70...1530....66494.....3161392......171452513.....10043940772

%C ...89...5378...199913....31436637.....1679184332....284244110551

%C ..326..18938..2287282...315944445....49651101137...8226667384808

%C ..413..67042..7139249..3182997999...492598252164.241133356688912

%C .1630.238446.79717242.32059374557.14686568899907

%H R. H. Hardin, <a href="/A222649/b222649.txt">Table of n, a(n) for n = 1..144</a>

%e Some solutions for n=3 k=4

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

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

%e ..0..0..0..0....0..0..1..2....0..0..0..1....1..1..1..1....0..1..0..0

%Y Column 1 is A222364

%K nonn,tabl

%O 1,7

%A _R. H. Hardin_ Feb 27 2013

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Last modified April 19 08:08 EDT 2024. Contains 371782 sequences. (Running on oeis4.)