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%I #6 Dec 18 2015 18:17:37
%S 1,4,45,2704,670480,787195249,4145792570105,101143260268999524,
%T 11280706205128114909440
%N Number of n X n array permutations with each element not moved or moved diagonally or antidiagonally by one
%C Diagonal of A189280
%e Some solutions for 3X3
%e ..0..3..4....0..5..4....4..3..2....0..3..2....0..3..4....0..5..2....0..3..2
%e ..7..2..1....7..2..1....1..0..7....1..8..7....1..2..7....7..6..1....7..4..1
%e ..6..5..8....6..3..8....6..5..8....6..5..4....6..5..8....4..3..8....6..5..8
%K nonn
%O 1,2
%A _R. H. Hardin_ Apr 19 2011
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