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 A255093 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 1 and no column sum 1 0

%I #4 Feb 14 2015 11:53:19

%S 36,189,1838,25413,554091,19198366,1018478173,83424236667,

%T 10600414554200,2073988286314137,624690506094584769,

%U 290291489884708296332,207973048180805421940626,229556436731155431563064899

%N Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 1 and no column sum 1

%C Diagonal of A255101

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A255101

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2015

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Last modified December 2 02:40 EST 2023. Contains 367505 sequences. (Running on oeis4.)