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!)
A252344 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8 0

%I #4 Dec 16 2014 20:42:48

%S 562,1386,6986,40756,592230,11021412,249626459,15316883573,

%T 776195661759,48304754871426,11765535679080573,1482895646097699360,

%U 245504085165829558660,254091374667549037155557

%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8

%C Diagonal of A252352

%e Some solutions for n=4

%e ..3..1..3..0..1..0....2..3..2..2..3..2....3..1..3..0..1..3....0..3..1..3..0..1

%e ..2..0..2..2..3..2....3..1..0..3..1..0....2..0..2..2..3..2....2..2..3..2..2..0

%e ..2..3..2..2..3..2....2..3..2..2..3..2....2..3..2..2..0..2....2..2..3..2..2..0

%e ..0..1..3..3..1..3....2..0..2..2..3..2....3..1..3..3..1..3....3..3..1..3..3..1

%e ..2..3..2..2..3..2....3..1..3..3..1..0....2..3..2..2..0..2....2..2..0..2..2..0

%e ..2..3..2..2..0..2....2..0..2..2..0..0....2..0..2..2..0..2....2..2..0..2..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 16 2014

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 September 17 05:28 EDT 2024. Contains 375985 sequences. (Running on oeis4.)