|
%I #4 Feb 01 2014 07:55:58
%S 81,339,1426,6545,30727,148966,734805,3679063,18601074,94728601,
%T 484797943,2489729974,12816761181,66088527271,341168095114,
%U 1762603785057,9111229406855,47115466594414,243704127371685,1260784775294295
%N Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal
%C Column 1 of A236902
%H R. H. Hardin, <a href="/A236895/b236895.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 9*a(n-1) -187*a(n-3) +343*a(n-4) +1052*a(n-5) -2856*a(n-6) -1872*a(n-7) +8792*a(n-8) -856*a(n-9) -11368*a(n-10) +5024*a(n-11) +4992*a(n-12) -3072*a(n-13)
%e Some solutions for n=5
%e ..0..1....1..0....1..2....0..2....2..2....1..1....2..1....0..2....0..2....2..1
%e ..1..1....2..2....2..2....2..2....0..2....2..2....2..2....2..1....2..1....0..2
%e ..0..0....2..2....0..1....1..1....2..0....1..0....1..0....1..2....2..0....2..0
%e ..1..1....2..1....2..2....2..2....2..1....2..2....2..2....2..0....2..0....2..1
%e ..0..1....2..0....2..1....2..0....2..2....0..0....0..2....2..2....1..2....1..2
%e ..1..1....0..2....2..2....2..2....0..1....2..2....2..0....1..0....0..2....2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 01 2014
| 