|
%I #4 Mar 31 2012 12:36:45
%S 26,2271,256836,45733593,8368969235,1492809994673,242036871702096,
%T 35298906093734951,4642502137893927659,554913226364951538300,
%U 60802653561518861509758,6157866184324500142914732
%N Number of nX6 0..3 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor
%C Column 6 of A201625
%e Some solutions for n=2
%e ..0..0..0..2..2..2....0..0..0..1..2..2....0..0..0..0..0..3....0..0..0..0..2..2
%e ..0..2..2..0..0..0....3..3..3..1..3..3....0..0..0..2..2..3....2..2..2..2..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 03 2011
| 