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A254515 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I #4 Jan 31 2015 12:59:45

%S 55904,356061,2290520,14550580,98841764,655621406,4236936385,

%T 27317279531,173846791901,1101346479953,6937210408938,43612074196451,

%U 273183503345418,1707664140081090,10638559906896711,66078961499998778,408919585817852038

%N Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

%C Row 4 of A254512

%H R. H. Hardin, <a href="/A254515/b254515.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 31 2015

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)