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Search: id:A026032
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A026032 C(3n,n) - C(3n,n-4). +0
1
1, 3, 15, 84, 494, 2988, 18411, 114950, 724845, 4606095, 29451240, 189264672, 1221417360, 7910510312, 51388786107, 334716829674, 2185180379179, 14294808917025, 93680975707935, 614925987859260, 4042236129950970 (list; graph; listen)
OFFSET

0,2

CROSSREFS

a(n) = T(3n,n), where T is defined in A026022.

Sequence in context: A074552 A115910 A106569 this_sequence A005809 A067122 A093593

Adjacent sequences: A026029 A026030 A026031 this_sequence A026033 A026034 A026035

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

EXTENSIONS

More terms from Ralf Stephan, Jan 09 2005

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Last modified July 19 08:04 EDT 2008. Contains 142098 sequences.


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