1,1
Eric Weisstein's World of Mathematics, Sexy Primes.
Cf. A023201, A046117.
Sequence in context: A071029 A071030 A118109 * A014044 A014079 A071032
Adjacent sequences: A104034 A104035 A104036 * A104038 A104039 A104040
easy,nonn
Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 31 2005