login
A139699
Positive integers x,y such that prime(x)*prime(x+y) = y^2 + 1, ordered by increasing x+y.
1
1, 5, 3, 22, 10, 186
OFFSET
1,2
LINKS
Sebastian Martin Ruiz, Home Page
EXAMPLE
prime(1)*prime(1+5) = 2*13 = 26 = 5^2+1.
CROSSREFS
Sequence in context: A296356 A091593 A154825 * A303634 A069607 A128366
KEYWORD
nonn,tabf,more
AUTHOR
Sebastian Martin-Ruiz (s_m_ruiz(AT)yahoo.es), Aug 25 2008
STATUS
approved