A250867 - OEIS

%I #4 Nov 28 2014 09:43:06

%S 512000000000,343000000000000,229783203125000000,

%T 153936794281005859375,27033764064453125000000,

%U 4747561509943000000000000,833747762130149888000000000,61770704200698544902144000000

%N Number of (n+2)X(7+2) 0..3 arrays with nondecreasing sum of every three consecutive values in every row and column

%C Column 7 of A250868

%H R. H. Hardin, <a href="/A250867/b250867.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=1

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

%e ..0..0..0..0..0..0..0..2..2....0..0..0..0..0..2..0..0..2

%e ..0..1..1..0..1..1..1..1..1....0..0..1..0..3..2..3..3..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 28 2014