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Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum
1

%I #4 Apr 21 2015 10:39:52

%S 119716,1444804,20611600,343435024,5413133476,81296835876,

%T 1247979436900,19524520846336,302481385728064,4647415584865936,

%U 71685607209222400,1109793021380582449,17154635437233106576,264743455290883440400

%N Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum

%C Column 2 of A257385

%H R. H. Hardin, <a href="/A257381/b257381.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..0..2..2..0....2..0..1..1....1..1..0..2....0..0..0..0....2..0..0..2

%e ..2..1..1..2....0..0..2..2....0..2..1..2....1..2..2..2....0..2..1..1

%e ..1..0..1..0....0..1..0..1....0..0..2..0....2..2..1..1....0..1..1..1

%Y Cf. A257385

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 21 2015