id:A128664 - OEIS Search Results

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Rounded first term of asymptotic approximation to A003823.

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1, 1, 0, -1, 0, 1, 1, -1, -2, 0, 2, 2, -1, -3, -1, 3, 3, -2, -5, -1, 5, 5, -3, -8, -2, 8, 8, -5, -12, -2, 13, 11, -7, -18, -4, 18, 17, -10, -26, -5, 27, 24, -15, -37, -7, 38, 33, -21, -52, -10, 52, 46, -29, -72, -14, 72, 64, -40, -98, -20, 98, 87, -54, -133, -27, 132, 116, -72, -178, -36, 176, 155, -96, -236, -47, 233, 205, -126 (list; graph; listen)

	OFFSET	`0,9`
	REFERENCES	`B. Cais and B. Conrad, Modular curves and Ramanujan's continued fraction, J. Reine Angew. Math. 597 (2006), 27-104. See page 69 (7.27). MR2264315`
	PROGRAM	`(PARI) {a(n)= if(n<1, n==0, round( 4/5Pi/ sqrt(5n-1)* cos(2/25Pi (5n-2)) besseli(1, 4/25Pi sqrt(5*n-1))) )}`
	CROSSREFS	`Sequence in context: A118206 A029314 A071635 this_sequence A003823 A059451 A083817` `Adjacent sequences: A128661 A128662 A128663 this_sequence A128665 A128666 A128667`
	KEYWORD	`sign`
	AUTHOR	`Michael Somos, Mar 19 2007`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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