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A222569 Number of n X 4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order. 1

%I

%S 4,10,56,435,4790,50535,547563,5815939,63130202,676152734,7328771224,

%T 79083695286,857913193954,9302185273377,101073333908828,

%U 1099637763169027,11970412457540599,130557727722965457,1423911243991041430

%N Number of n X 4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

%C Column 4 of A222573.

%H R. H. Hardin, <a href="/A222569/b222569.txt">Table of n, a(n) for n = 1..128</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A222573.

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 25 2013

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Last modified June 30 07:11 EDT 2022. Contains 354914 sequences. (Running on oeis4.)