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 A258886 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum 1

%I #5 Jun 14 2015 10:14:29

%S 242,2304,6072,7225,12544,21025,32400,48841,69696,97969,132496,177241,

%T 230400,297025,374544,469225,577600,707281,853776,1026169,1218816,

%U 1442401,1690000,1974025,2286144,2640625,3027600,3463321,3936256,4464769

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

%C Diagonal of A258894

%H R. H. Hardin, <a href="/A258886/b258886.txt">Table of n, a(n) for n = 1..68</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A258894

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 14 2015

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Last modified May 22 02:24 EDT 2024. Contains 372741 sequences. (Running on oeis4.)