OFFSET
0,2
COMMENTS
Term a(13) has 925 decimal digits; a(14) has 1850 decimal digits. - Michael De Vlieger, Jan 07 2015
LINKS
Michael De Vlieger, Table of n, a(n) for n = 0..13 [a(0)=1 from Georg Fischer, Jun 25 2021]
FORMULA
a(n) = (a(n-1))^2 for n > 3.
a(n) = 2^A098011(n+1). - R. J. Mathar, Apr 22 2010
MATHEMATICA
Join[{2, 4}, NestList[#^2&, 8, 10]] (* Harvey P. Dale, Nov 30 2019 *)
Table[2^Ceiling[3 2^(i - 3)], {i, 8}] (* Trevor Cappallo, Apr 21 2021 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Oct 29 2009
EXTENSIONS
Definition corrected by R. J. Mathar, Apr 22 2010
More terms from Vincenzo Librandi, Apr 25 2010
Entry revised by N. J. A. Sloane, Jun 20 2021
STATUS
approved