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A362147 Numbers that are not cubefull. 2
2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 82, 83, 84 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Integers m for which there is a prime p that divides m, but p^3 does not divide m.
Complement of A036966.
LINKS
EXAMPLE
2|24 and 2^3|24, but 3|24 and 3^3 does not divide 24, so 24 is a term.
MATHEMATICA
Select[Range[2, 100], Min[FactorInteger[#][[;; , 2]]] < 3 &] (* Amiram Eldar, Apr 09 2023 *)
PROG
(PARI) isok(k) = (k!=1) && (vecmin(factor(k)[, 2])<=2); \\ Michel Marcus, Apr 12 2023
CROSSREFS
Cf. A004709 (cubefree), A046099 (not cubefree), A036966 (cubefull), A362148 (non-cubefree that are not cubefull).
Sequence in context: A284837 A068937 A285316 * A361395 A329135 A182768
KEYWORD
nonn
AUTHOR
Bernard Schott, Apr 09 2023
STATUS
approved

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Last modified February 24 11:15 EST 2024. Contains 370303 sequences. (Running on oeis4.)