id:A105750 - OEIS Search Results

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RE(Product{k=0..n, 1+kI}), I=sqrt(-1).

+0
2

1, 1, -1, -10, -10, 190, 730, -6620, -55900, 365300, 5864300, -28269800, -839594600, 2691559000, 159300557000, -238131478000, -38894192662000, -15194495654000, 11911522255750000, 29697351895900000, -4477959179352100000, -21683886333440500000, 2029107997508660900000 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(n)=RE(Product{k=0..n, 1-kI}).`
	CROSSREFS	`Cf. A009454, A003703, A105751.` `Adjacent sequences: A105747 A105748 A105749 this_sequence A105751 A105752 A105753` `Sequence in context: A004286 A047817 A065243 this_sequence A052983 A072804 A079793`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 18 2005`
	EXTENSIONS	`Corrected by njas, Nov 05 2005`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

AT&T Labs Research