1,1

Number of ways of writing 10^n as the sum of two odd primes, when the order matters.

Apart from a(1), equals 2*A065577(n).

See A065577 for further information.

Adjacent sequences: A107315 A107316 A107317 this_sequence A107319 A107320 A107321

Sequence in context: A001764 A120920 A064314 this_sequence A050147 A120921 A074533

nonn

njas, based on email from R. J. Mathar, Nov 07 2006