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 A254800 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I #4 Feb 08 2015 09:15:48

%S 47816,121701,362924,1075560,3369689,11139423,33038951,101966575,

%T 299746659,918337028,2734158171,8245249775,24762486913,74914476443,

%U 228202658309,695565801656,2134961468514,6546088696054,20191667530977

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

%C Column 4 of A254804

%H R. H. Hardin, <a href="/A254800/b254800.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 08 2015

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Last modified July 18 04:36 EDT 2024. Contains 374377 sequences. (Running on oeis4.)