login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217531 Numbers n such that sum of cubes of digits of n equals the sum of prime divisors of n. 1
142, 402, 5505, 6127, 7305, 12643, 13550, 21033, 21452, 22244, 22290, 22532, 24030, 24936, 25612, 28132, 32040, 35125, 35296, 43053, 47835, 51404, 51703, 52324, 55869, 66003, 69060, 80125, 82464, 86833, 101061, 102240, 103039, 104647, 110334, 110616, 111153 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

n such that A055012 (n) = A008472(n).

LINKS

Table of n, a(n) for n=1..37.

EXAMPLE

402 =  2*3*67  is in the sequence because 4^3 + 0^3 + 2^3 = 2 + 3 + 67 = 72.

MATHEMATICA

Rest[Select[Range[20000], Total[Transpose[FactorInteger[#]][[1]]]==Total[IntegerDigits[#]^3]&]]

CROSSREFS

Cf. A055012, A008472, A217390.

Sequence in context: A202279 A035702 A172335 * A158135 A092230 A259422

Adjacent sequences:  A217528 A217529 A217530 * A217532 A217533 A217534

KEYWORD

nonn,easy,base

AUTHOR

Michel Lagneau, Oct 05 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 20 14:54 EST 2019. Contains 329337 sequences. (Running on oeis4.)