A137253 Semiprimes (A001358) which are not the sum of two semiprimes.

4, 6, 9, 22, 33

Offset

1,1

Comments

Apparently the list is complete.

Links

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

Crossrefs

Cf. A001358.

Sequence in context: A115681 A257842 A239307 * A035135 A046338 A118690

Adjacent sequences: A137250 A137251 A137252 * A137254 A137255 A137256

Keyword

fini,full,nonn

Author

Zak Seidov, Mar 11 2008

Status

approved