id:A080213 - OEIS Search Results

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Binomial(n, greatest prime factor of n).

+0
3

1, 1, 1, 6, 1, 20, 1, 28, 84, 252, 1, 220, 1, 3432, 3003, 120, 1, 816, 1, 15504, 116280, 705432, 1, 2024, 53130, 10400600, 2925, 1184040, 1, 142506, 1, 496, 193536720, 2333606220, 6724520, 7140, 1, 35345263800, 8122425444, 658008, 1, 26978328, 1 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`For n>1: a(n)=1 iff n is prime.`
	CROSSREFS	`Cf. A006530, A080211, A080212.` `Sequence in context: A064083 A152249 A167580 this_sequence A161151 A146383 A096130` `Adjacent sequences: A080210 A080211 A080212 this_sequence A080214 A080215 A080216`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 06 2003`

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.

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