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 A268266 Number of length-(7+1) 0..n arrays with new repeated values introduced in sequential order starting with zero. 1
 129, 1918, 18804, 126591, 619490, 2377935, 7594224, 21042479, 52119726, 117925215, 247685420, 488872479, 915404154, 1638353711, 2819638440, 4689195855, 7566196934, 11884886079, 18225677796, 27352180415, 40254857490 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 7 of A268261. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = n^8 + n^7 + 7*n^6 + 6*n^5 + 30*n^4 + 20*n^3 + 50*n^2 + 20*n + 15 for n>2 EXAMPLE Some solutions for n=4 ..2....0....0....3....2....1....0....2....0....1....4....3....1....3....1....1 ..3....4....4....1....3....0....1....4....2....0....1....1....3....0....0....2 ..4....3....3....3....1....1....3....0....4....4....2....4....2....2....4....0 ..1....2....0....1....4....2....4....0....2....1....0....2....4....1....0....0 ..3....3....4....0....2....4....0....4....4....0....3....1....2....2....0....2 ..0....4....1....3....1....2....0....2....1....3....0....3....4....4....1....3 ..3....0....0....0....2....1....1....1....0....0....2....2....1....2....4....0 ..0....0....1....4....3....2....1....2....2....3....0....1....3....4....2....3 CROSSREFS Cf. A268261. Sequence in context: A329727 A209532 A233305 * A230187 A240417 A353940 Adjacent sequences: A268263 A268264 A268265 * A268267 A268268 A268269 KEYWORD nonn AUTHOR R. H. Hardin, Jan 29 2016 STATUS approved

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Last modified March 31 02:30 EDT 2023. Contains 361623 sequences. (Running on oeis4.)