id:A015093 - OEIS Search Results

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q-Catalan numbers (recurrence version) for q=9.

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1, 1, 10, 829, 606070, 3977651242, 234884294434900, 124827614155955343925, 597046858511123656669455550, 25700910736350654917922270058287454, 9957059456624152426469878400757673046606860 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = sum_{i=1}^{n-1} q^{(i-1)} a(i) a(n-i).`
	CROSSREFS	`Sequence in context: A015057 A006440 A054944 this_sequence A104906 A013386 A013385` `Adjacent sequences: A015090 A015091 A015092 this_sequence A015094 A015095 A015096`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified December 4 12:27 EST 2008. Contains 151280 sequences.

AT&T Labs Research