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A075039 Smallest of three consecutive squarefree numbers having equal numbers of prime factors. 2
33, 85, 93, 141, 201, 213, 217, 301, 393, 445, 633, 697, 921, 1041, 1137, 1261, 1309, 1345, 1401, 1641, 1761, 1837, 1885, 1893, 1941, 1981, 2013, 2101, 2181, 2217, 2305, 2361, 2433, 2461, 2517, 2641, 2665, 2721, 2733, 3097, 3385, 3601, 3693, 3729, 3865 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

A001221(a(n))=A001222(a(n))=A001221(a(n)+1)=A001222(a(n)+1).

LINKS

Table of n, a(n) for n=0..44.

EXAMPLE

33 is a member as 33, 34 and 35 are of the form p*q where p and q are primes.

CROSSREFS

Cf. A005117, A052214, A086263, A039833.

Sequence in context: A005238 A052214 A063838 * A039833 A250732 A080700

Adjacent sequences:  A075036 A075037 A075038 * A075040 A075041 A075042

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Sep 03 2002

EXTENSIONS

More terms from Matthew Conroy, Sep 08 2002

Edited by Reinhard Zumkeller, Jul 14 2003

STATUS

approved

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Last modified November 22 10:59 EST 2019. Contains 329389 sequences. (Running on oeis4.)