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A222793 Number of n X 7 0..3 arrays with exactly floor(n X 7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order. 1

%I #7 May 19 2014 21:46:00

%S 10,1246,62072,16057219,1233338020,441448848458,39461160617203,

%T 15128909374723762,1387613501687392832,539786227324116371858,

%U 49826407575212876136940,19496373548379748918470018

%N Number of n X 7 0..3 arrays with exactly floor(n X 7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

%C Column 7 of A222794.

%H R. H. Hardin, <a href="/A222793/b222793.txt">Table of n, a(n) for n = 1..25</a>

%e Some solutions for n=3:

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 05 2013

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)