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 A258517 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I

%S 3456356,46288077,1030931222,17303680979,287984893776,5245904339615,

%T 94282780215006,1659294419012438,29395760753905418,523152766780848946,

%U 9288833933802115608,164784211536203553116,2925325373424901069520

%N Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally

%C Row 7 of A258511

%H R. H. Hardin, <a href="/A258517/b258517.txt">Table of n, a(n) for n = 1..16</a>

%e Some solutions for n=1

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

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

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

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

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

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

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

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

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

%Y Cf. A258511

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 01 2015

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Last modified May 13 02:02 EDT 2021. Contains 343836 sequences. (Running on oeis4.)