OFFSET
1,1
COMMENTS
Except for first three terms, a(n) = (a(n-1))^2 .
FORMULA
a(n) = 15^(2^(n-3)), n > 2.
MATHEMATICA
Join[{3, 5}, NestList[#^2&, 15, 7]] (* Harvey P. Dale, Feb 08 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Feb 23 2010
EXTENSIONS
Edited by Jaroslav Krizek and R. J. Mathar, Mar 04 2010
STATUS
approved