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A256763 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum 1

%I #5 Apr 09 2015 21:28:48

%S 352,14641,475904,16777216,372556800,7780827681,117202871808,

%T 1607509551376,18188873230624,185599234557361,1717824808451648,

%U 14261419187961856,114631549276294144,822273125910687361

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

%C Diagonal of A256771

%H R. H. Hardin, <a href="/A256763/b256763.txt">Table of n, a(n) for n = 1..16</a>

%e Some solutions for n=2

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

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

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

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

%Y Cf. A256771

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 09 2015

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Last modified July 14 17:05 EDT 2024. Contains 374322 sequences. (Running on oeis4.)