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 A268254 Number of length-(n+1) 0..n arrays with new repeated values introduced in sequential order starting with zero. 1
 3, 17, 143, 1610, 22710, 384605, 7594224, 171161319, 4333369912, 121706300672, 3754131927947, 126136021943207, 4584723067123764, 179223541390399501, 7497293121634632330, 334153612151475666156, 15807274255300507355559 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A268261. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=5 ..0....4....2....3....1....1....4....4....2....2....1....4....5....4....1....4 ..3....2....1....0....3....0....3....0....0....5....0....5....0....2....3....0 ..0....4....2....1....2....2....1....3....0....0....1....1....2....5....0....2 ..3....0....1....0....3....5....5....5....4....0....3....5....0....3....3....0 ..5....2....4....0....2....2....2....3....1....0....5....4....1....2....0....3 ..1....4....2....4....4....3....4....2....3....2....4....5....3....3....5....2 CROSSREFS Cf. A268261. Sequence in context: A189001 A087885 A178685 * A198860 A298691 A051442 Adjacent sequences:  A268251 A268252 A268253 * A268255 A268256 A268257 KEYWORD nonn AUTHOR R. H. Hardin, Jan 29 2016 STATUS approved

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Last modified October 21 06:25 EDT 2019. Contains 328292 sequences. (Running on oeis4.)