A195089 Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 5.

64, 192, 288, 320, 432, 448, 648, 704, 729, 800, 832, 960, 972, 1088, 1216, 1344, 1440, 1458, 1472, 1568, 1856, 1984, 2000, 2016, 2112, 2160, 2240, 2368, 2400, 2496, 2624, 2752, 3008, 3024, 3168, 3240, 3264, 3392, 3520, 3600, 3645, 3648, 3744, 3776, 3872, 3904

Offset

1,1

Comments

A046660(a(n)) = 5. - Reinhard Zumkeller, Nov 29 2015

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Index entries for sequences computed from exponents in factorization of n

Mathematica

Select[Range[4000], PrimeOmega[#]-PrimeNu[#]==5&]

Prog

(PARI) is(n)=bigomega(n)-omega(n)==5 \\ Charles R Greathouse IV, Sep 14 2015
(Haskell)
a195089 n = a195089_list !! (n-1)
a195089_list = filter ((== 5) . a046660) [1..]
-- Reinhard Zumkeller, Nov 29 2015

Crossrefs

Cf. A060687, A195069, A195086, A195087, A195088, A195090,

A195091, A195092, A195093.

Cf. A025487, A046660, A257851, A261256, A264959.

Sequence in context: A208636 A135270 A045052 * A336596 A175166 A220763

Adjacent sequences: A195086 A195087 A195088 * A195090 A195091 A195092

Keyword

nonn

Author

Harvey P. Dale, Sep 08 2011

Status

approved