cp's OEIS Frontend

A214161 Number of 0..5 colorings of an nX4 array circular in the 4 direction with new values 0..5 introduced in row major order.

%I A214161 #6 Jul 22 2025 23:10:53
%S A214161 4,337,88261,27240856,8548472292,2687052137887,844765198701963,
%T A214161 265584804041291390,83497056404973808506,26250596837942857641941,
%U A214161 8252911849410478325131985,2594628782449337737766700740
%N A214161 Number of 0..5 colorings of an nX4 array circular in the 4 direction with new values 0..5 introduced in row major order.
%C A214161 Column 3 of A214166
%H A214161 R. H. Hardin, <a href="/A214161/b214161.txt">Table of n, a(n) for n = 1..210</a>
%F A214161 Empirical: a(n) = 370*a(n-1) -18411*a(n-2) +297448*a(n-3) -1839799*a(n-4) +4424682*a(n-5) -4113757*a(n-6) +1249468*a(n-7)
%e A214161 Some solutions for n=4
%e A214161 ..0..1..0..1....0..1..2..1....0..1..0..1....0..1..0..1....0..1..2..1
%e A214161 ..1..2..1..0....3..0..1..4....1..2..1..0....1..2..1..2....1..2..0..2
%e A214161 ..0..1..2..1....5..1..3..1....0..1..0..1....0..1..0..3....2..3..4..3
%e A214161 ..1..0..3..4....0..2..5..2....2..3..1..4....3..0..1..4....1..2..3..2
%K A214161 nonn
%O A214161 1,1
%A A214161 _R. H. Hardin_ Jul 05 2012