|
%I #5 May 17 2014 19:15:41
%S 7,35,159,723,3453,17634,96472,563256,3492837,22901243,158134009,
%T 1145995500,8690227115,68774540753,566710394107,4852093593696,
%U 43084515133226,396100229113680,3764573877643410,36935721134238873
%N Number of length n+3 0..n arrays with no four elements in a row with pattern aabb (with a!=b) and new values 0..n introduced in 0..n order
%C Diagonal of A242584
%H R. H. Hardin, <a href="/A242577/b242577.txt">Table of n, a(n) for n = 1..146</a>
%e Some solutions for n=4
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..0....0....1....0....1....1....1....1....0....0....1....1....1....1....1....0
%e ..1....1....2....0....2....2....0....1....0....1....2....2....2....2....0....1
%e ..0....2....2....0....3....3....2....0....0....2....2....3....2....1....2....2
%e ..0....0....0....1....0....1....0....1....0....3....3....1....3....2....3....3
%e ..0....1....3....2....3....4....0....2....1....2....1....1....1....3....1....4
%e ..1....3....3....3....0....2....0....1....2....3....4....4....0....2....0....4
%K nonn
%O 1,1
%A _R. H. Hardin_, May 17 2014
| 