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A027871 Product(3^i - 1), i=1..n. 3
1, 2, 16, 416, 33280, 8053760, 5863137280, 12816818094080, 84078326697164800, 1654829626053597593600, 97714379759212830706892800, 17309711516825516108403231948800 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

CROSSREFS

Sequence in context: A189104 A181213 A130276 * A009397 A009700 A012030

Adjacent sequences:  A027868 A027869 A027870 * A027872 A027873 A027874

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 22 23:04 EDT 2013. Contains 225585 sequences.