1,1

Select[Prime[Range[220]], PrimeQ[10#+1]&&PrimeQ[1#+10]&]

Sequence in context: A103521 A103966 A023237 this_sequence A155703 A023217 A106077

Adjacent sequences: A106058 A106059 A106060 this_sequence A106062 A106063 A106064

nonn

Zak Seidov (zakseidov(AT)yahoo.com), May 07 2005