0,1

Shyam Sunder Gupta, Palindromic Primes up to 10^19.

a(2)=12 because 12th fibonacci number i.e. 144 is the smallest fibonacci number which is a multiple of primorial(2) i.e. 6

Subsequence of A016115, which is the main entry.

Cf. A016115.

Adjacent sequences: A040022 A040023 A040024 this_sequence A040026 A040027 A040028

Sequence in context: A081011 A008829 A013193 this_sequence A109365 A079128 A081548

nonn,hard,base

Patrick De Geest (pdg(AT)worldofnumbers.com)

a(10) from Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 12 2006