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).
Table of n, a(n) for n=1..13.
See A065577 for further information.
Sequence in context: A064314 A185630 A284843 * A176281 A050147 A259800
Adjacent sequences: A107315 A107316 A107317 * A107319 A107320 A107321
N. J. A. Sloane, based on email from R. J. Mathar, Nov 07 2006
a(13) from Donovan Johnson, Nov 16 2009