OFFSET
1,1
EXAMPLE
a(1) = 2 because p(1)*p(2) - 2 = 4 -> square, a(2) = 6 because p(2)*p(3) - 6 = 9 -> square.
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Oct 02 2002
STATUS
approved