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 A238521 Number of (n+1)X(4+1) 0..3 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors 1

%I #4 Feb 28 2014 07:40:48

%S 74676,10332060,5576504976,2197236920100,926028739793772,

%T 384603811149627048,160244098029692394444,66719231482289160388356,

%U 27783378778566097617975744,11569243392276205415354307780

%N Number of (n+1)X(4+1) 0..3 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors

%C Column 4 of A238523

%H R. H. Hardin, <a href="/A238521/b238521.txt">Table of n, a(n) for n = 1..54</a>

%e Some solutions for n=1

%e ..3..1..3..3..2....0..1..1..2..1....3..2..3..2..0....2..3..2..1..3

%e ..1..3..0..0..3....1..2..2..3..0....2..0..0..3..2....0..2..1..3..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 28 2014

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Last modified June 14 07:16 EDT 2024. Contains 373393 sequences. (Running on oeis4.)