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 A222870 Number of nX4 0..5 arrays with no element equal to another at a city block distance of exactly two, and new values 0..5 introduced in row major order 1
 7, 370, 30528, 2903520, 276768768, 26393020608, 2516653274112, 239976498026352, 22882892571893280, 2181996323092650432, 208063958702105336832, 19839913341854050041888, 1891832423610196628408928 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A222871 LINKS R. H. Hardin, Table of n, a(n) for n = 1..23 EXAMPLE Some solutions for n=3 ..0..0..1..2....0..1..2..3....0..1..2..0....0..0..1..2....0..0..1..1 ..2..3..3..4....4..4..2..5....0..3..4..1....3..4..5..3....2..3..4..5 ..4..5..0..4....5..3..0..4....2..5..4..2....3..1..2..4....1..3..4..0 CROSSREFS Sequence in context: A203706 A145181 A221353 * A270247 A270228 A082443 Adjacent sequences: A222867 A222868 A222869 * A222871 A222872 A222873 KEYWORD nonn AUTHOR R. H. Hardin Mar 07 2013 STATUS approved

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Last modified February 23 01:10 EST 2024. Contains 370265 sequences. (Running on oeis4.)