A188960 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A188960

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

6, 720, 229080, 75764664, 17316382188, 3909049448304, 924052205725920, 222219070309228084, 53009406781203828708, 12600147078274878009900, 2996409860247302687479312, 713212717944705067662180768

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 3 of A188962

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..17

EXAMPLE

Some solutions for 4X3

..0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1

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

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