A246887 - OEIS

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A246887

Number of length n+4 0..3 arrays with some pair in every consecutive five terms totalling exactly 3

900, 3364, 12544, 46656, 173056, 643204, 2390116, 8880400, 32993536, 122589184, 455480964, 1692335044, 6287855616, 23362511104, 86803301376, 322517224836, 1198311166276, 4452319442704, 16542571369536, 61463843852544 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 3 of A246892`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..210`
	FORMULA	`Empirical: a(n) = 2a(n-1) +4a(n-2) +6a(n-3) +12a(n-4) -4a(n-5) -6a(n-6) -2*a(n-8) +a(n-10)`
	EXAMPLE	`Some solutions for n=5` `..0....1....0....0....2....2....0....1....1....0....0....2....1....2....0....2` `..3....2....1....2....3....3....0....0....0....0....2....3....0....0....3....1` `..0....2....1....2....2....1....0....2....0....1....3....0....0....3....3....1` `..3....1....2....3....3....0....3....0....0....3....2....0....0....2....1....2` `..1....2....1....2....0....2....1....2....2....2....1....1....3....1....1....0` `..1....0....2....0....0....2....0....1....1....3....3....3....0....3....0....1` `..2....2....2....1....3....1....2....1....1....1....0....2....2....1....3....2` `..0....1....1....3....3....1....0....2....1....3....2....3....1....0....0....0` `..3....3....3....2....3....3....1....1....3....2....1....3....1....1....1....2`
	CROSSREFS	`Sequence in context: A162143 A258888 A287800 * A232556 A069096 A232557` `Adjacent sequences: A246884 A246885 A246886 * A246888 A246889 A246890`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Sep 06 2014`
	STATUS	`approved`

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Last modified March 30 19:10 EDT 2023. Contains 361622 sequences. (Running on oeis4.)