1,1

Primes of the form A000043(n)*10^A028335(n) + A000668(n).

Table of n, a(n) for n=1..5.

a(4) is 138191(prime number) where 13 is 5th Mersenne exponent and 8191 is 5th Mersenne prime.

Cf. A000043, A000668, A028335.

Sequence in context: A089782 A113893 A146390 * A282712 A134754 A134755

Adjacent sequences: A233382 A233383 A233384 * A233386 A233387 A233388

nonn,base,less

Juri-Stepan Gerasimov, Dec 08 2013

approved