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A222269 Number of nX1 0..3 arrays with exactly floor(nX1/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order 5

%I #5 Feb 14 2013 05:26:33

%S 1,0,0,3,4,8,10,55,72,294,378,1883,2440,11920,15408,78255,101330,

%T 517050,669658,3451712,4473984,23156964,30030364,156076271,202510224,

%U 1055435486,1370043450,7157673375,9295027344,48656943008,63208940422,331450961443

%N Number of nX1 0..3 arrays with exactly floor(nX1/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order

%C Column 1 of A222275

%H R. H. Hardin, <a href="/A222269/b222269.txt">Table of n, a(n) for n = 1..210</a>

%e All solutions for n=4

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

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

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

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

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 14 2013

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Last modified April 14 00:20 EDT 2024. Contains 371652 sequences. (Running on oeis4.)