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A139787 Semiprime lucky numbers. +0
2
9, 15, 21, 25, 33, 49, 51, 69, 87, 93, 111, 115, 129, 133, 135, 141, 159, 169, 201, 205, 219, 235, 237, 259, 267, 289, 303, 319, 321, 327, 339, 361, 391, 393, 415, 427, 451, 489, 511, 517, 519, 529, 535, 537, 553, 559, 579, 583, 591, 655, 679, 685, 699, 717 (list; graph; listen)
OFFSET

1,1

COMMENT

Subset of A031879 Composite lucky numbers.

FORMULA

A000959 INTERSECTION A001358.

CROSSREFS

Cf. A000959, A001358, A031879.

Sequence in context: A025045 A107987 A031879 this_sequence A063139 A163170 A097636

Adjacent sequences: A139784 A139785 A139786 this_sequence A139788 A139789 A139790

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), May 20 2008

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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