id:A129509 - OEIS Search Results

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Expansion of F(x,x)/4, where F(x,z)=(sqrt(x(1+sqrt(z))^2+1)-sqrt(x(1-sqrt(z))^2+1)^2.

+0
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1, -1, 0, 2, -4, 3, 5, -20, 29, -1, -94, 221, -191, -327, 1454, -2282, 162, 8002, -19902, 18275, 30505, -143511, 234364, -24437, -841723, 2164873, -2069014, -3325410, 16315410 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`a(n)=A129507(n)/4.`
	REFERENCES	`A. M. Tulino and S. Verdu, Random Matrix Theory and Wireless Communications, 2004, p. 9.`
	FORMULA	`G.f.: (1+x+x^2-sqrt(1+2x+3x^2-2x^3+x^4))/2;`
	CROSSREFS	`Sequence in context: A093416 A073944 A072937 this_sequence A015049 A057956 A151734` `Adjacent sequences: A129506 A129507 A129508 this_sequence A129510 A129511 A129512`
	KEYWORD	`sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 18 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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