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 A088380 Numbers not exceeding the cube of their smallest prime-factor. 4
 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 35, 37, 41, 43, 47, 49, 53, 55, 59, 61, 65, 67, 71, 73, 77, 79, 83, 85, 89, 91, 95, 97, 101, 103, 107, 109, 113, 115, 119, 121, 125, 127, 131, 133, 137, 139, 143, 149, 151, 157, 161, 163, 167, 169 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) <= A020639(a(n))^3 = A088378(a(n)); complement of A088381; a(n) < A088381(k) for n <= 28, a(n) > A088381(k) for n > 28. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 MATHEMATICA Select[Range[200], #<=FactorInteger[#][[1, 1]]^3&] (* Harvey P. Dale, Apr 28 2022 *) PROG (Haskell) a088380 n = a088382_list !! (n-1) a088380_list = [x | x <- [1..], x <= a020639 x ^ 3] -- Reinhard Zumkeller, Feb 06 2015 CROSSREFS Cf. A000430, A088382, A020639, A088378, A088381. Sequence in context: A322341 A080676 A033061 * A122620 A218470 A008727 Adjacent sequences: A088377 A088378 A088379 * A088381 A088382 A088383 KEYWORD nonn AUTHOR Reinhard Zumkeller, Sep 28 2003 STATUS approved

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Last modified August 5 19:08 EDT 2024. Contains 374954 sequences. (Running on oeis4.)