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Search: id:A099856
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A099856 Expansion of (1+3x)/(1-3x). +0
5
1, 6, 18, 54, 162, 486, 1458, 4374, 13122, 39366, 118098, 354294, 1062882, 3188646, 9565938, 28697814, 86093442, 258280326, 774840978, 2324522934, 6973568802, 20920706406, 62762119218, 188286357654, 564859072962, 1694577218886 (list; graph; listen)
OFFSET

0,2

COMMENT

A099858 gives a Chebyshev transform. Binomial transform is A083420.

FORMULA

a(n)=6*3^(n-1)-0^n.

a(n)=A025192(n+1), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2008]

CROSSREFS

Sequence in context: A003208 A002933 A016089 this_sequence A007206 A056349 A035070

Adjacent sequences: A099853 A099854 A099855 this_sequence A099857 A099858 A099859

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Oct 28 2004

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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