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A251796 Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1

%I #4 Dec 09 2014 07:35:22

%S 6627,348679,17195593,873945739,44356434596,2255553135793,

%T 114701510008550,5833986692886877,296731470002944944,

%U 15092940450644308394,767684502371802140711,39047592997403421809265

%N Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01

%C Column 3 of A251801

%H R. H. Hardin, <a href="/A251796/b251796.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2014

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Last modified July 22 16:15 EDT 2024. Contains 374540 sequences. (Running on oeis4.)