id:A102052 - OEIS Search Results

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A102052

Column 1 of triangle A102051, which is the matrix inverse of triangle A101275 (number of Schroeder paths).

+0
2

1, -4, 15, -58, 229, -924, 3795, -15822, 66801, -285072, 1227759, -5329938, 23299309, -102474004, 453139947, -2013469718, 8985382889, -40255260696, 180985860071, -816328679450, 3692868722661, -16750809358364, 76170701553635, -347166666620958, 1585669523701729 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 8(1-x)/(1+sqrt(1+4x-4*x^2))^3.`
	PROGRAM	`(PARI) {a(n)=polcoeff(8(1-x)/(1+sqrt(1+4x-4x^2+xO(x^n)))^3, n)}`
	CROSSREFS	`Cf. A101275, A102051.` `Sequence in context: A026850 A017950 A003126 this_sequence A128714 A007342 A017951` `Adjacent sequences: A102049 A102050 A102051 this_sequence A102053 A102054 A102055`
	KEYWORD	`sign`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 27 2004`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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