A111687 - OEIS

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A111687

Comprimorial(n): the product of the first n primes and the first n composite numbers.

8, 144, 5760, 362880, 39916800, 6227020800, 1482030950400, 422378820864000, 155435406077952000, 81137281972690944000, 50305114823068385280000, 39087074217524135362560000, 35256540944206770097029120000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = A002110(n)*A036691(n) for n>=1. - Rick L. Shepherd (rshepherd2(AT)hotmail.com), Aug 20 2005`
	EXAMPLE	`a(1) = 24 = 8, a(2) = (23)(46)=144.`
	CROSSREFS	`Cf. A002110 (primorials), A036691 (compositorials).` `Sequence in context: A052764 A024284 A024285 * A071305 A172150 A105046` `Adjacent sequences: A111684 A111685 A111686 * A111688 A111689 A111690`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 17 2005`
	EXTENSIONS	`Corrected and extended by Rick L. Shepherd (rshepherd2(AT)hotmail.com), Aug 20 2005`

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Last modified February 15 21:27 EST 2012. Contains 205859 sequences.