OFFSET
2,1
COMMENTS
For the Goldbach conjecture every even number that is greater than 2 is the sum of three primes and odd number is the sum of three primes, no term is greater 3.
LINKS
Eric Weisstein's World of Mathematics, Goldbach Conjecture .
FORMULA
EXAMPLE
a(2)=2 because 2^2=2+2;
a(3)=2 because 3^2=2+7.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Apr 02 2005
EXTENSIONS
Corrected and extended by Michel Marcus, Jun 04 2013
STATUS
approved