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A046309 Numbers that are divisible by at least 8 primes (counted with multiplicity). 4
256, 384, 512, 576, 640, 768, 864, 896, 960, 1024, 1152, 1280, 1296, 1344, 1408, 1440, 1536, 1600, 1664, 1728, 1792, 1920, 1944, 2016, 2048, 2112, 2160, 2176, 2240, 2304, 2400, 2432, 2496, 2560, 2592, 2688, 2816, 2880, 2916, 2944, 3024, 3072, 3136 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

FORMULA

Product p_i^e_i with Sum e_i >= 8.

MATHEMATICA

Select[Range[3200], PrimeOmega[#]>7&] (* Harvey P. Dale, May 29 2013 *)

PROG

(PARI) is(n)=bigomega(n)>7 \\ Charles R Greathouse IV, Sep 17 2015

CROSSREFS

Cf. A046310.

Sequence in context: A345534 A345786 A186473 * A036332 A114987 A046310

Adjacent sequences:  A046306 A046307 A046308 * A046310 A046311 A046312

KEYWORD

nonn

AUTHOR

Patrick De Geest, Jun 15 1998

STATUS

approved

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Last modified July 31 02:33 EDT 2021. Contains 346367 sequences. (Running on oeis4.)