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A214139 Number of 0..4 colorings on an nX7 array circular in the 7 direction with new values 0..4 introduced in row major order 1

%I

%S 147,522515,2000093424,7658621867351,29325981412599886,

%T 112293482777565310571,429988214977169477452677,

%U 1646487940037763716348859705,6304643807380348053085274173830

%N Number of 0..4 colorings on an nX7 array circular in the 7 direction with new values 0..4 introduced in row major order

%C Column 6 of A214141

%H R. H. Hardin, <a href="/A214139/b214139.txt">Table of n, a(n) for n = 1..65</a>

%F Empirical: a(n) = 4156*a(n-1) -1272609*a(n-2) +80884549*a(n-3) -1222656178*a(n-4) -19887912212*a(n-5) +527430399664*a(n-6) -2643328241280*a(n-7) +3940919419904*a(n-8) -1580167634944*a(n-9)

%e Some solutions for n=4

%e ..0..1..2..0..2..0..1....0..1..2..3..4..0..4....0..1..0..1..2..1..2

%e ..1..2..3..1..3..4..0....4..2..4..1..2..1..3....1..0..2..3..1..2..0

%e ..4..3..2..3..4..3..1....1..0..1..3..4..0..4....2..4..3..4..2..3..1

%e ..3..4..0..1..2..0..2....3..2..0..1..3..1..0....0..3..2..1..3..4..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 05 2012

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Last modified September 22 06:08 EDT 2020. Contains 337289 sequences. (Running on oeis4.)