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A222355 Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order 1

%I #4 Feb 16 2013 06:07:44

%S 1,1,5,24,27,176,404,2180,3751,21261,44985,238441,483280,2549426,

%T 5537716,28412352,62022509,314794248,706911054,3539578743,8030595379,

%U 39896971556,91762984752,452730150747,1049361132758,5153972338487,12033114257303

%N Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order

%C Column 3 of A222360

%H R. H. Hardin, <a href="/A222355/b222355.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Feb 16 2013

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)