OFFSET
1,2
EXAMPLE
a(8)=7^(3+5)=7^8=5764801.
a(9)=2^(4+17)=2^21=2097152.
a(10)=2^(3+2)=2^5=32.
a(11)=19^(2+2)=19^4=130321.
a(12)=5^(3+7)=5^10=9765625.
a(13)=2^(11+23)=2^34=17179869184,
etc.
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Nov 13 2008
EXTENSIONS
More terms from R. J. Mathar, Apr 18 2010
STATUS
approved