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 A274172 Nonsquare composites with all prime factors larger than 5. 1
 77, 91, 119, 133, 143, 161, 187, 203, 209, 217, 221, 247, 253, 259, 287, 299, 301, 319, 323, 329, 341, 343, 371, 377, 391, 403, 407, 413, 427, 437, 451, 469, 473, 481, 493, 497, 511, 517, 527, 533, 539, 551, 553, 559, 581, 583, 589 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Nonsquare composites not divisible by 2,3,5. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 377 = 13*29 is a term. MAPLE filter:= n -> igcd(n, 30)=1 and not issqr(n) and not isprime(n): select(filter, [seq(i, i=3..1000, 2)]); # Robert Israel, May 30 2021 PROG (PARI) { for(n=1, 600, if(!(isprime(n) || n%2==0 || n%3==0 || n%5==0 || issquare(n)), print1(n", ")))} (PARI) is(n) = my(f=factor(n)); if(!issquare(n), f[1, 1]>5 && matsize(f)[1]>1, 0) \\ David A. Corneth, Jun 12 2016 CROSSREFS Intersection of A007775 and A089229. - Felix FrÃ¶hlich, Jun 12 2016 Sequence in context: A294741 A052202 A089525 * A061671 A269809 A064902 Adjacent sequences:  A274169 A274170 A274171 * A274173 A274174 A274175 KEYWORD nonn AUTHOR Dimitris Valianatos, Jun 12 2016 STATUS approved

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Last modified May 25 08:42 EDT 2022. Contains 354049 sequences. (Running on oeis4.)