OFFSET
1,1
FORMULA
a(n)=A139286(n)/2.
MATHEMATICA
Table[2^(2p-1)/2, {p, Prime[Range[20]]}] (* Harvey P. Dale, Jun 21 2021 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Apr 13 2008
EXTENSIONS
More terms from Jon E. Schoenfield, Jul 16 2010
STATUS
approved