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A188960 Number of nX3 array permutations with each element moved by a city block distance of no more than three 1

%I

%S 6,720,229080,75764664,17316382188,3909049448304,924052205725920,

%T 222219070309228084,53009406781203828708,12600147078274878009900,

%U 2996409860247302687479312,713212717944705067662180768

%N Number of nX3 array permutations with each element moved by a city block distance of no more than three

%C Column 3 of A188962

%H R. H. Hardin, <a href="/A188960/b188960.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for 4X3

%e ..0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1

%e ..2.10..3....2..9..4....6..2..4....7..9..8....2..9..6....8..7..3....8..3..7

%e ..4..8.11....3..8.11....9..7..3....3..2.11....7..3.11....6..4..9...10..2.11

%e ..9..7..6....7.10..6...10..8.11....6..4.10....8..4.10...11.10..2....4..6..9

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 14 2011

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Last modified August 8 17:55 EDT 2022. Contains 356016 sequences. (Running on oeis4.)