# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a229416 Showing 1-1 of 1 %I A229416 #4 Dec 18 2015 18:18:41 %S A229416 1,4,136,59008,345706336,28256240134144,33097994593655140864 %N A229416 Number of n X n 0..3 zero-diagonal arrays with corresponding row and column sums equal %C A229416 Column 3 of A229417 %e A229416 Some solutions for n=4 %e A229416 ..0..2..3..3....0..0..0..1....0..1..2..0....0..3..2..0....0..3..0..1 %e A229416 ..3..0..3..0....0..0..0..1....0..0..3..3....2..0..2..3....1..0..2..2 %e A229416 ..2..3..0..3....0..0..0..3....3..2..0..3....0..2..0..3....3..0..0..1 %e A229416 ..3..1..2..0....1..1..3..0....0..3..3..0....3..2..1..0....0..2..2..0 %K A229416 nonn %O A229416 1,2 %A A229416 _R. H. Hardin_ Sep 22 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE