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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084796 Replace n with concatenation of its prime factors in decreasing order. 5
1, 2, 3, 22, 5, 32, 7, 222, 33, 52, 11, 322, 13, 72, 53, 2222, 17, 332, 19, 522, 73, 112, 23, 3222, 55, 132, 333, 722, 29, 532, 31, 22222, 113, 172, 75, 3322, 37, 192, 133, 5222, 41, 732, 43, 1122, 533, 232, 47, 32222, 77, 552, 173, 1322, 53, 3332, 115, 7222, 193, 292 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..20000

MAPLE

with(numtheory):

a:= n-> parse(cat(`if`(n=1, 1,

    sort([seq(i[1]$i[2], i=ifactors(n)[2])], `>`)[]))):

seq(a(n), n=1..100);  # Alois P. Heinz, May 02 2016

MATHEMATICA

Table[FromDigits[Flatten[Table[#[[1]], #[[2]]]&/@ Reverse[ FactorInteger[ n]]]], {n, 60}] (* Harvey P. Dale, Aug 29 2016 *)

CROSSREFS

Cf. A032726, A085307, A084797.

Sequence in context: A073646 A037276 A068190 * A084797 A163902 A154865

Adjacent sequences:  A084793 A084794 A084795 * A084797 A084798 A084799

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane, Jul 19 2003

EXTENSIONS

More terms from Christopher N. Swanson (cswanson(AT)ashland.edu), Jul 22 2003

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 January 20 14:40 EST 2019. Contains 319333 sequences. (Running on oeis4.)