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A224267 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing 1

%I

%S 36,1296,24842,296646,2485967,15921905,83124099,371699763,1478187738,

%T 5375576014,18237850918,58547208334,179599458173,530112786109,

%U 1512954573026,4190185564746,11292006460221,29674041029167

%N Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing

%C Row 7 of A224262

%H R. H. Hardin, <a href="/A224267/b224267.txt">Table of n, a(n) for n = 1..41</a>

%H R. H. Hardin, <a href="/A224267/a224267.txt">Empirical polynomial of degree 28</a>

%F Empirical polynomial of degree 28 (see link above)

%e Some solutions for n=3

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 02 2013

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Last modified October 4 04:26 EDT 2022. Contains 357237 sequences. (Running on oeis4.)