1,2

Table of n, a(n) for n=1..63.

9 is a member because sum of 9th and 10th semiprimes, 25 and 26, is 51 which is a semiprime.

Resulting semiprimes: A092192.

Sequence in context: A041335 A042147 A090517 * A030376 A080520 A032372

Adjacent sequences: A092188 A092189 A092190 * A092192 A092193 A092194

easy,nonn

Zak Seidov, Feb 23 2004

approved