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A254517 Number of (6+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 13:01:09

%S 833037,8282251,74724261,648678493,6835294784,70328373238,

%T 690528516461,6873737047337,67863913445117,665102486533923,

%U 6483379051873678,63137552262813647,612196906415543312,5925295206911839909

%N Number of (6+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 6 of A254512

%H R. H. Hardin, <a href="/A254517/b254517.txt">Table of n, a(n) for n = 1..114</a>

%e Some solutions for n=1

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 31 2015

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)