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A217960 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 nX4 array 1

%I #4 Oct 16 2012 06:36:23

%S 17,321,5415,93765,1602741,27317977,465184959,7919256577,134805742899,

%T 2294680520773,39060078023831,664879775228995,11317562137329901,

%U 192647146079979077,3279232808653682467,55818982418231563527

%N Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 nX4 array

%C Column 4 of A217964

%H R. H. Hardin, <a href="/A217960/b217960.txt">Table of n, a(n) for n = 1..38</a>

%F Empirical: a(n) = 19*a(n-1) -23*a(n-2) -144*a(n-3) -675*a(n-4) +378*a(n-5) +3291*a(n-6) +4937*a(n-7) -1247*a(n-8) -12054*a(n-9) -12369*a(n-10) -5436*a(n-11) -816*a(n-12) +744*a(n-13) +364*a(n-14) +100*a(n-15) for n>16

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 16 2012

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)