OFFSET
0,2
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
KEYWORD
easy,nonn
AUTHOR
David Applegate, Jun 05 2009
STATUS
approved