OFFSET
1,1
EXAMPLE
prime(3)*prime(5)=55. prime(5)*prime(7) = 187. prime(11)*prime(13)=1271. prime(17)*prime(19)=3953.
MATHEMATICA
Prime[First[#]] Prime[Last[#]]&/@Select[Partition[Prime[Range[200]], 2, 1], Last[#]-First[#]==2&] (* Harvey P. Dale, Feb 22 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Jun 18 2009
EXTENSIONS
Corrected by R. J. Mathar, Oct 21 2009
STATUS
approved