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A195090 Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 6. 12
128, 384, 576, 640, 864, 896, 1296, 1408, 1600, 1664, 1920, 1944, 2176, 2187, 2432, 2688, 2880, 2916, 2944, 3136, 3712, 3968, 4000, 4032, 4224, 4320, 4374, 4480, 4736, 4800, 4992, 5248, 5504, 6016, 6048, 6336, 6480, 6528, 6784 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
A046660(a(n)) = 6. - Reinhard Zumkeller, Nov 29 2015
LINKS
MAPLE
op(select(n->bigomega(n)-nops(factorset(n))=6, [$1..6784])); # Paolo P. Lava, Jul 03 2018
MATHEMATICA
Select[Range[7000], PrimeOmega[#]-PrimeNu[#]==6&]
PROG
(PARI) is(n)=bigomega(n)-omega(n)==6 \\ Charles R Greathouse IV, Sep 14 2015
(Haskell)
a195090 n = a195090_list !! (n-1)
a195090_list = filter ((== 6) . a046660) [1..]
-- Reinhard Zumkeller, Nov 29 2015
CROSSREFS
Sequence in context: A086059 A220582 A203449 * A209380 A135271 A369638
KEYWORD
nonn
AUTHOR
Harvey P. Dale, Sep 08 2011
STATUS
approved

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)