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A239846 Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4 1

%I #5 Aug 11 2014 22:46:11

%S 5,35,244,1613,9066,46260,214126,921674,3745690,14493362,53568061,

%T 189418056,642520724,2097034554,6603318291,20113173790,59401818885,

%U 170482050659,476411892763,1298626619304,3458363180706,9010558662526

%N Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

%C Column 4 of A239849

%H R. H. Hardin, <a href="/A239846/b239846.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A239846/a239846.txt">Empirical polynomial of degree 40</a>

%F Empirical polynomial of degree 40 (see link above)

%e Some solutions for n=4

%e ..0..0..3..3....0..0..3..3....3..3..0..0....0..0..3..3....0..0..0..0

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 28 2014

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)