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A139288
2^(2p - 1)/2, where p is prime.
8
4, 16, 256, 4096, 1048576, 16777216, 4294967296, 68719476736, 17592186044416, 72057594037927936, 1152921504606846976, 4722366482869645213696, 1208925819614629174706176, 19342813113834066795298816
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 *)
KEYWORD
nonn
AUTHOR
Omar E. Pol, Apr 13 2008
EXTENSIONS
More terms from Jon E. Schoenfield, Jul 16 2010
STATUS
approved