id:A093458 - OEIS Search Results

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Mixed factorials. Define MF(n) as the product prime(1)*composite(1)*(prime(2)*composite(2)...prime(n/2)*composite(n/2) if n is even else MF(n) as the product prime(1)*composite(1)*(prime(2)*composite(2)*...*prime((n+1)/2). a(0)= 1.

+0
2

1, 2, 8, 24, 144, 720, 5760, 40320, 362880, 3991680, 39916800, 518918400, 6227020800, 105859353600, 1482030950400, 28158588057600, 422378820864000, 9714712879872000, 155435406077952000, 4507626776260608000 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Partial product of A073846.`
	CROSSREFS	`Cf. A073846, A093459.` `Sequence in context: A052624 A087982 A145238 this_sequence A088994 A141598 A071599` `Adjacent sequences: A093455 A093456 A093457 this_sequence A093459 A093460 A093461`
	KEYWORD	`less,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 03 2004`
	EXTENSIONS	`More terms from David Wasserman (dwasserm(AT)earthlink.net), Sep 28 2006`

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Last modified December 4 12:27 EST 2008. Contains 151280 sequences.

AT&T Labs Research