login
Number of (n+2)X9 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
1

%I #5 Mar 31 2012 12:36:05

%S 1078197169699,159099595031390,12251749347425002,629512200937395977,

%T 23974440869491730184,719176668433423037034,17695100284866122677270,

%U 367664080675457084952938,6594122451689240367926243

%N Number of (n+2)X9 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order

%C Column 7 of A186180

%H R. H. Hardin, <a href="/A186178/b186178.txt">Table of n, a(n) for n = 1..39</a>

%e Some solutions for 4X9

%e ..0..0..0..0..0..0..0..0..3....0..0..0..0..0..0..0..0..0

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

%e ..0..0..0..0..0..0..0..2..3....0..0..0..0..0..0..0..0..5

%e ..0..0..0..0..0..0..3..5..5....0..0..0..0..0..0..0..5..5

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 13 2011