A268266 - OEIS

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A268266

Number of length-(7+1) 0..n arrays with new repeated values introduced in sequential order starting with zero.

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 + 7n^6 + 6n^5 + 30n^4 + 20n^3 + 50n^2 + 20n + 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.)