A184026 - OEIS

%I #5 Mar 31 2012 12:35:56

%S 7684,11541,18701,35256,70867,159318,374381,950430,2493379,6918426,

%T 19700261,58562166,177935707,560102058,1799006381,5959407990,

%U 20122577299,69815060586,246423783221,889827288726,3258504907147,12147037985898

%N 1/8 the number of (n+1)X7 0..3 arrays with all 2X2 subblock sums the same

%C Column 6 of A184029

%H R. H. Hardin, <a href="/A184026/b184026.txt">Table of n, a(n) for n = 1..28</a>

%e Some solutions for 4X7

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 08 2011