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A274172 Nonsquare composites with all prime factors larger than 5. 0
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

Table of n, a(n) for n=1..47.

EXAMPLE

377 = 13*29 is a term.

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 Fröhlich, 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 June 2 05:55 EDT 2020. Contains 334767 sequences. (Running on oeis4.)