0,1
See web page for references.
Table of n, a(n) for n=0..3.
C. K. Caldwell, Pepin's Test
3^((Fn-1)/2) where Fn is a Fermat number (A000215).
a(1) = 3^((F1-1)/2) = 3^((5-1)/2) = 3^2 = 9.
Sequence in context: A060712 A122463 A072005 * A255503 A027896 A116620
Adjacent sequences: A060374 A060375 A060376 * A060378 A060379 A060380
nonn
Jason Earls, Apr 02 2001
Next two numbers have 15634 and 1024610092 digits respectively.
Corrected offset, formula and example Harry J. Smith, Jul 04 2009
approved
