|
%I #4 Dec 01 2014 18:55:19
%S 4894,142600,3866110,114913804,3265612528,96040080726,2766068478692,
%T 80823086238398,2339684264865070,68156224595625074,
%U 1977223548390300748,57518662922203116468,1670177784987749442158,48556849381031862099676
%N Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having one or two 1s
%C Column 7 of A251326
%H R. H. Hardin, <a href="/A251325/b251325.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..1..0..0..0..0..1..1..0....0..0..0..1..0..0..0..0....0..1..0..1..0..1..1..0
%e ..0..1..1..0..1..0..0..0....0..1..0..1..0..1..1..0....0..0..0..0..0..0..0..1
%e ..1..0..0..0..0..1..1..1....0..0..1..0..0..0..0..0....0..1..1..0..1..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 01 2014
| 