1,1
Eric Weisstein's World of Mathematics, Sophie Germain Prime
Cf. A005384.
Sequence in context: A138378 A005493 A123636 * A078109 A149045 A149046
Adjacent sequences: A092813 A092814 A092815 * A092817 A092818 A092819
nonn
Eric Weisstein (eric(AT)weisstein.com), Mar 06, 2004
a(10) computed by Eric Weisstein (eric(AT)weisstein.com), Nov 02, 2005.
a(11)-a(12) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Jun 19 2010