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A279622 Numbers with a prime factor greater than 5. 1
7, 11, 13, 14, 17, 19, 21, 22, 23, 26, 28, 29, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 46, 47, 49, 51, 52, 53, 55, 56, 57, 58, 59, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 76, 77, 78, 79, 82, 83, 84, 85, 86, 87, 88, 89, 91, 92, 93, 94 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..9825

FORMULA

a(n) = n + O(log^3 n). - Charles R Greathouse IV, Dec 22 2016

MATHEMATICA

fQ[n_]:=!PowerMod[30, n, n] == 0; Select[Range[100], fQ]

PROG

(PARI) isok(n) = vecmax(factor(n)[, 1]) > 5; \\ Michel Marcus, Dec 21 2016

(PARI) is(n)=if(n<7, return(0)); n>>=valuation(n, 2); n/=3^valuation(n, 2) * 5^valuation(n, 5); n>1 \\ Charles R Greathouse IV, Dec 22 2016

(MAGMA) [n: n in [1..100] | not PrimeDivisors(n) subset [2, 3, 5]]; // Vincenzo Librandi, Jan 29 2017

CROSSREFS

Complement of A051037.

Cf. A059485.

Sequence in context: A091901 A072823 A110547 * A247819 A051660 A187040

Adjacent sequences:  A279619 A279620 A279621 * A279623 A279624 A279625

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 21 2016

STATUS

approved

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Last modified April 25 16:08 EDT 2019. Contains 322461 sequences. (Running on oeis4.)