cp's OEIS Frontend

A211845 Number of nonnegative integer arrays of length n+9 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 5.

%I A211845 #6 Jun 02 2025 07:49:37
%S A211845 1,11,82,494,2619,12713,57913,251481,1052383,4277451,16986189,
%T A211845 66202629,254144210,963755936,3618833405,13481785125,49915401836,
%U A211845 183932105682,675399816338,2474127510634,9050295230250,33087054691466,120988345056414
%N A211845 Number of nonnegative integer arrays of length n+9 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 5.
%C A211845 Column 4 of A211849
%H A211845 R. H. Hardin, <a href="/A211845/b211845.txt">Table of n, a(n) for n = 1..210</a>
%e A211845 Some solutions for n=3
%e A211845 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A211845 ..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
%e A211845 ..1....1....1....1....0....1....1....1....1....1....1....1....1....1....1....1
%e A211845 ..2....2....2....2....0....2....2....1....2....1....2....1....2....2....2....2
%e A211845 ..2....2....1....1....2....2....2....2....1....2....2....2....2....2....2....1
%e A211845 ..3....3....1....1....2....3....3....2....1....2....3....2....3....3....3....1
%e A211845 ..3....3....3....3....3....3....3....3....3....3....2....2....3....2....3....3
%e A211845 ..4....3....1....3....3....4....4....3....3....2....3....3....4....2....4....3
%e A211845 ..4....4....1....4....4....4....4....4....4....2....3....3....4....4....4....4
%e A211845 ..5....3....4....4....4....0....5....3....3....4....4....4....1....4....5....4
%e A211845 ..5....3....4....5....5....0....5....3....3....4....4....4....1....4....4....5
%e A211845 ..2....5....5....4....5....5....1....5....5....5....5....5....5....5....4....5
%K A211845 nonn
%O A211845 1,2
%A A211845 _R. H. Hardin_ Apr 22 2012