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A036327 Composite numbers n such that juxtaposition of prime factors of n has length 3. +0
2
8, 12, 18, 20, 22, 26, 27, 28, 30, 33, 34, 38, 39, 42, 45, 46, 50, 51, 55, 57, 58, 62, 63, 65, 69, 70, 74, 75, 77, 82, 85, 86, 87, 91, 93, 94, 95, 98, 105, 106, 111, 115, 118, 119, 122, 123, 125, 129, 133, 134, 141, 142, 145, 146, 147, 155, 158, 159, 161, 166, 175 (list; graph; listen)
OFFSET

1,1

COMMENT

There are exactly 104 such numbers.

CROSSREFS

Cf. A036326-A036334.

Adjacent sequences: A036324 A036325 A036326 this_sequence A036328 A036329 A036330

Sequence in context: A030752 A091523 A104201 this_sequence A051144 A067537 A046339

KEYWORD

nonn,base,fini

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Dec 15 1998.

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.


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