OFFSET
2,1
EXAMPLE
a(2) = 9 = 3*3 = 2+7;
a(3) = 10 = 2*5 = 2+3+5;
a(4) = 21 = 3*7 = 2+3+5+11;
a(5) = 34 = 2*17 = 2+3+5+7+17;
a(6) = 49 = 7*7 = 2+3+5+7+13+19;
a(7) = 58 = 2*29 = 2+3+5+7+11+13+17.
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Feb 18 2005
EXTENSIONS
Corrected and extended by Ray Chandler Feb 25 2005
STATUS
approved