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Search: id:A079877
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A079877 Numbers having twin prime pairs as factors. +0
1
15, 30, 35, 45, 60, 70, 75, 90, 105, 120, 135, 140, 143, 150, 165, 175, 180, 195, 210, 225, 240, 245, 255, 270, 280, 285, 286, 300, 315, 323, 330, 345, 350, 360, 375, 385, 390, 405, 420, 429, 435, 450, 455, 465, 480, 490, 495, 510, 525, 540, 555, 560, 570 (list; graph; listen)
OFFSET

1,1

EXAMPLE

429=3*11*13=3*A001359(3)*A006512(3), therefore 429 is a term.

CROSSREFS

Cf. A001359, A006512, A037074, A062505, A074480.

Adjacent sequences: A079874 A079875 A079876 this_sequence A079878 A079879 A079880

Sequence in context: A115801 A033898 A051967 this_sequence A060700 A131933 A056917

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 20 2003

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.


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