The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Dec 10 2014 16:36:30
%S 1652,1548,1536,4208,30504,120984,325504,4618864,31618896,127303080,
%T 3373936496,34737558232,215577492448,10277366678144,169711805448888,
%U 1620323527704184,134840227340115584,3566261394625218008
%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum unequal to 4 or 5 and every diagonal and antidiagonal sum equal to 4 or 5
%C Diagonal of A251905
%e Some solutions for n=4
%e ..3..2..3..1..3..2....1..1..0..0..3..3....0..2..1..3..3..1....2..3..1..2..0..1
%e ..3..0..3..0..3..0....0..3..3..1..2..0....3..3..0..0..1..2....2..0..0..3..3..1
%e ..1..0..2..0..1..0....1..2..0..0..3..3....0..2..1..3..3..0....3..3..2..1..0..0
%e ..2..3..1..3..2..3....0..3..3..1..2..0....3..3..0..0..2..1....2..0..0..3..3..1
%e ..0..3..0..3..0..3....1..1..0..0..3..3....0..1..2..3..3..0....2..3..1..2..0..0
%e ..0..2..0..1..1..1....0..3..3..1..2..0....3..3..0..0..1..2....2..0..0..3..3..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 10 2014