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 A268048 Number of nX4 0..4 arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order. 1
 12, 3183, 1650058, 829256141, 386602239495, 168939588471080, 70137880138850634, 27947317545815128289, 10768364145370007188272, 4034957610865168347501829, 1476750375062134346976725823 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A268049. LINKS R. H. Hardin, Table of n, a(n) for n = 1..17 EXAMPLE Some solutions for n=5 ..0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0 ..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0 ..2..0..0..3....2..0..0..2....1..0..0..2....2..0..0..3....2..0..0..2 ..4..3..0..0....3..1..0..1....3..0..0..1....4..2..0..2....3..4..0..3 ..2..3..0..4....1..0..4..0....4..2..2..4....3..3..0..3....4..2..0..4 CROSSREFS Cf. A268049. Sequence in context: A283831 A268008 A222922 * A271516 A012603 A012737 Adjacent sequences: A268045 A268046 A268047 * A268049 A268050 A268051 KEYWORD nonn AUTHOR R. H. Hardin, Jan 25 2016 STATUS approved

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Last modified March 28 08:28 EDT 2023. Contains 361585 sequences. (Running on oeis4.)