A161181 - OEIS

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A161181

A117805/3.

0

1, 2, 10, 290, 252010, 190526868290, 108901462620994495704010, 35578585682975584013618831758290462042094536290, 3797507277602505611886017656109365392377072888898472983341161302567287339676755374368286356010

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..8.

FORMULA

a(0)=1, a(n)=a(n-1)*(3*a(n-1)-1)

MATHEMATICA

NestList[#(3#-1)&, 1, 10] (* Harvey P. Dale, Apr 01 2011 *)

CROSSREFS

Sequence in context: A171873 A098706 A143249 * A073834 A321267 A111837

Adjacent sequences: A161178 A161179 A161180 * A161182 A161183 A161184

KEYWORD

easy,nonn

AUTHOR

David Applegate, Jun 05 2009

STATUS

approved