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A134334 Numbers which are not divisible by the number of their prime factors (counted with multiplicity). 13
8, 9, 15, 20, 21, 25, 28, 32, 33, 35, 39, 44, 48, 49, 50, 51, 52, 54, 55, 57, 64, 65, 68, 69, 70, 72, 76, 77, 81, 85, 87, 90, 91, 92, 93, 95, 98, 108, 110, 111, 112, 115, 116, 119, 121, 123, 124, 125, 126, 128, 129, 130, 133, 135, 141, 143, 145, 148, 150, 154, 155, 159 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Hieronymus Fischer, Table of n, a(n) for n = 1..10000

EXAMPLE

a(1) = 8, since 8 = 2*2*2 has 3 prime factors and 8 is not divisible by 3.

a(3) = 15, since 15 = 3*5 has 2 prime factors and 15 is not divisible by 2.

PROG

(PARI) isok(n) = (n % bigomega(n)) \\ Michel Marcus, Jul 15 2013

CROSSREFS

Cf. A000040, A001222, A074946 (complement), A100118, A046363, A133620, A133621.

Cf. A133880, A133890, A133900, A133910, A133911, A134330, A134331, A134332, A134333, A134335, A134344, A134376.

Sequence in context: A101765 A256351 A050688 * A292188 A301659 A265221

Adjacent sequences:  A134331 A134332 A134333 * A134335 A134336 A134337

KEYWORD

nonn

AUTHOR

Hieronymus Fischer, Oct 23 2007

STATUS

approved

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Last modified December 13 20:06 EST 2018. Contains 318087 sequences. (Running on oeis4.)