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A256899 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically 1

%I #4 Apr 12 2015 08:51:58

%S 9374,38540,202462,721051,1948416,4825736,9929098,19908603,36723020,

%T 65041901,113261036,189185601,309307456,502055292,798218142,

%U 1244171446,1921684582,2937068620,4423884362,6588612217,9722998772,14214987731

%N Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically

%C Column 3 of A256904

%H R. H. Hardin, <a href="/A256899/b256899.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%Y Cf. A256904

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 12 2015

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)