1,1

Cf. A045536: Primes p such that 1*p+2 and 2*p+1 are prime; A007693: Numbers n such that n and 6*n+1 are primes.

Select[Prime[Range[220]], PrimeQ[8#+1]&&PrimeQ[1#+8]&]

Cf. A007693, A045536.

Sequence in context: A107135 A129780 A154504 this_sequence A059508 A084817 A100965

Adjacent sequences: A106057 A106058 A106059 this_sequence A106061 A106062 A106063

nonn

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