OFFSET
1,1
COMMENTS
a(n) = the smallest squarefree number m of the form p*q with prime factors p and q = p^2 + n, or 0 if no such number exists; m = p^3 + p*n.
a(n) = 0 for numbers n from A232010.
FORMULA
a(4) = 39 because 39 = 3 * 13 = 3 * (3^2 + 4).
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 20 2013
STATUS
approved