A223878 - OEIS

%I #6 Aug 11 2014 22:45:50

%S 256,65536,3863372,88682677,1271992512,13394424591,112751480926,

%T 798519332969,4918189868664,26945689043408,133456233695247,

%U 604775893442790,2531399109074463,9862376758221364,35997221510544568

%N Number of 4Xn 0..3 arrays with rows, diagonals and antidiagonals unimodal

%C Row 4 of A223876

%H R. H. Hardin, <a href="/A223878/b223878.txt">Table of n, a(n) for n = 1..177</a>

%H R. H. Hardin, <a href="/A223878/a223878.txt">Empirical polynomial of degree 24</a>

%F Empirical polynomial of degree 24 (see link above)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 28 2013