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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A254735 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically 0

%I #4 Feb 06 2015 19:45:33

%S 512,19782,1209260,100974022,14206747097,3580969060985,

%T 1584367864267499,1238770716720377150,1737410697343829018105,

%U 4366981834520922382623437

%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically

%C Diagonal of A254743

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 06 2015

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)