id:A015105 - OEIS Search Results

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q-Catalan numbers (recurrence version) for q=-8.

+0
1

1, 1, -7, -463, 236201, 967959393, -31716161292711, -8314264834902720111, 17436260499054618815283977, 292531943497569504642889779448001, -39262972238604561849241166988994502971207 (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: A009660 A024097 A127908 this_sequence A112949 A119621 A142734` `Adjacent sequences: A015102 A015103 A015104 this_sequence A015106 A015107 A015108`
	KEYWORD	`sign`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified December 3 16:57 EST 2008. Contains 151279 sequences.

AT&T Labs Research