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 A075039 Smallest of three consecutive squarefree numbers having equal numbers of prime factors. 3
 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 1,1 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 FORMULA A001221(a(n)) = A001222(a(n)) = A001221(a(n)+1) = A001222(a(n)+1). EXAMPLE 33 is a member as 33, 34 and 35 are of the form p*q where p and q are primes. MATHEMATICA Select[Range[4000], AllTrue[# + Range[0, 2], SquareFreeQ] && Equal @@ PrimeNu[# + Range[0, 2]] &] (* Amiram Eldar, Feb 24 2021 *) CROSSREFS Cf. A001221, A001222, 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 Offset corrected by Amiram Eldar, Feb 24 2021 STATUS approved

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Last modified April 20 18:08 EDT 2021. Contains 343135 sequences. (Running on oeis4.)