1,10

This sequence differs from A083338 because A083338 allows 2 as a prime.

Daniel Forgues, Table of n, a(n) for n = 1..20000

OEIS Wiki, Goldbach conjecture

a(2n) = A002375(n) and a(2n+1) = A007963(n).

Cf. A002375, A007963, A083338.

Sequence in context: A291983 A112689 A298604 * A331904 A025829 A029285

Adjacent sequences: A190350 A190351 A190352 * A190354 A190355 A190356

nonn

Daniel Forgues, May 09 2011

approved