id:A066120 - OEIS Search Results

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Superduperprimorials: product of first n terms in Chernoff sequence.

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5

1, 2, 24, 8640, 653184000, 114069441024000000, 598216546007097937920000000000, 1601591599167888308924824752807936000000000000000 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`First number with n distinct positive triangular exponents. Subsequence of A025487. [From Matthew Vandermast (ghodges14(AT)comcast.net), Nov 05 2009]`
	FORMULA	`a(n) = Product_{1< = i< = n}[prime(i)^((n-i+1)(n-i+2)/2)] = a(n-1)*A006939(n) = A066119(n-3, 4).`
	EXAMPLE	`a(4) = 2(2(23))(2(23)(235)) =2(26)(2630) =212360 =8640`
	CROSSREFS	`Cf. A000040, A002110, A006939, A055462.` `Sequence in context: A088912 A055462 A088600 this_sequence A152687 A062716 A137888` `Adjacent sequences: A066117 A066118 A066119 this_sequence A066121 A066122 A066123`
	KEYWORD	`nonn,new`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Dec 05 2001`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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