# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a189443 Showing 1-1 of 1 %I A189443 #6 Dec 18 2015 18:17:38 %S A189443 1,5,80,7300,2735828,4982424404,40668908306516,1544933702911323688, %T A189443 268632319882770483171376,215429706055786434110682479345, %U A189443 794334848116480290212387125594468856 %N A189443 Number of n X n array permutations with each element moving zero or one space horizontally or diagonally %C A189443 Diagonal of A189449 %e A189443 Some solutions for 3X3 %e A189443 ..4..1..2....0..1..2....0..5..2....0..2..1....1..5..2....0..1..2....1..0..2 %e A189443 ..3..0..5....3..5..4....3..4..1....3..4..5....3..0..4....3..4..5....3..4..5 %e A189443 ..6..7..8....6..8..7....6..8..7....6..8..7....7..6..8....6..8..7....6..8..7 %K A189443 nonn %O A189443 1,2 %A A189443 _R. H. Hardin_ Apr 22 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE