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A137253 Semiprimes (A001358) which are not the sum of two semiprimes. +0
1
4, 6, 9, 22, 33 (list; graph; listen)
OFFSET

1,1
COMMENT

Apparently the list is finite and full.

CROSSREFS

Cf. A001358.

Sequence in context: A039566 A032817 A115681 this_sequence A035135 A046338 A118690

Adjacent sequences: A137250 A137251 A137252 this_sequence A137254 A137255 A137256

KEYWORD

fini,full,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Mar 11 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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