id:A063017 - OEIS Search Results

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Product of Catalan(n) and (3^n- 2^n +1)/2.

+0
2

1, 3, 20, 165, 1484, 13986, 135960, 1352637, 13707980, 141061206, 1470489800, 15500280978, 164967244792, 1770548369700, 19143828730800, 208347968093085, 2280730450967820, 25096531231958670, 277445318198433000 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = Catalan(n)*(3^(n+1)-2^(n+1)-1); o.g.f: -(sqrt(1-4x) - sqrt(1-8x)+ sqrt(1-12x) -1)/(4x)`
	CROSSREFS	`Cf. A000108, A063016.` `Sequence in context: A074560 A123355 A012882 this_sequence A051643 A000891 A129840` `Adjacent sequences: A063014 A063015 A063016 this_sequence A063018 A063019 A063020`
	KEYWORD	`easy,nonn`
	AUTHOR	`Olivier Gerard (ogerard(AT)ext.jussieu.fr), Jul 04 2001`

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Last modified August 28 19:25 EDT 2008. Contains 143183 sequences.

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