A237949 - OEIS

A237949

Number of (n+1) X (4+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

%I #7 May 04 2021 14:24:07

%S 50268,945688,17612024,386513430,7955118248,171966060604,

%T 3650074854108,80156219654316,1707964148016404,36925068554778528,

%U 793835282719330844,17305654560457523958,371564547082692396516,8024430424508906885568

%N Number of (n+1) X (4+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

%C Column 4 of A237951.

%H R. H. Hardin, <a href="/A237949/b237949.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=1

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

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

%Y Cf. A237951.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 16 2014