A236894 - OEIS

%I #7 Apr 26 2021 21:08:17

%S 81,3205,588459,715994489,3548382361732,83535813974993711,

%T 8373750980551070108806,3763719053101058628172546403,

%U 7388319149846129155540345883224889

%N Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the upper median of every 2 X 2 subblock equal.

%C Diagonal of A236902.

%H R. H. Hardin, <a href="/A236894/b236894.txt">Table of n, a(n) for n = 1..11</a>

%e Some solutions for n=2

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

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

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

%Y Cf. A236902.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2014