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

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A073647 In decimal representation of n, replace composite digits (4, 6, 8 and 9) with their concatenated prime factorizations (22, 23, 222 and 33). 0
1, 2, 3, 22, 5, 23, 7, 222, 33, 10, 11, 12, 13, 122, 15, 123, 17, 1222, 133, 20, 21, 22, 23, 222, 25, 223, 27, 2222, 233, 30, 31, 32, 33, 322, 35, 323, 37, 3222, 333, 220, 221, 222, 223, 2222, 225, 2223, 227, 22222, 2233, 50, 51, 52, 53, 522, 55, 523, 57, 5222, 533 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..59.

CROSSREFS

Sequence in context: A141458 A080670 A288532 * A073646 A037276 A068190

Adjacent sequences:  A073644 A073645 A073646 * A073648 A073649 A073650

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Aug 29 2002

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 December 15 09:08 EST 2018. Contains 318148 sequences. (Running on oeis4.)