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 #5 Mar 31 2012 12:37:04
%S 81,7572,4502701,14708332687,379440722213179
%N Number of (n+1)X(n+1) 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing
%C Diagonal of A205063
%e Some solutions for n=4
%e ..2..1..0..0..2....2..0..1..2..0....2..1..0..2..1....1..2..1..0..1
%e ..0..0..0..2..1....2..0..2..0..2....2..0..2..0..2....0..2..0..2..0
%e ..1..1..1..2..0....0..0..2..2..2....1..1..0..2..0....2..2..2..2..2
%e ..1..2..2..1..1....1..2..0..0..1....0..2..2..0..2....2..2..2..2..2
%e ..1..1..2..1..2....2..1..1..0..1....1..2..0..1..2....2..2..2..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 21 2012