The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A255141 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 1 and no column sum 1 0

%I

%S 47,371,6271,190731,10864279,1141237349,215697143322,73492753345771,

%T 45252431432900378,50274563122404978583,100732007486237755775772,

%U 364115407117554783582241759

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

%C Diagonal of A255149

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A255149

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 15 2015

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 23 10:11 EST 2022. Contains 350510 sequences. (Running on oeis4.)