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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A112897 a(n) is the least positive integer in base 10 containing n fours that is divisible by n. 1
4, 44, 444, 4444, 444440, 444444, 14444444, 444444144, 444444444, 44444444440, 444444444444, 444444444444, 44444244444444, 434444444444444, 4444444444444440, 44444444444444144, 344444444444444444 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = n*A112898(n).

EXAMPLE

a(7) = 14444444 because 14444444 contains 7 fours and is divisible by 7.

CROSSREFS

Cf. A112889-A112898, A112900-A112905, A112907-A112910.

Sequence in context: A187870 A105038 A002278 * A163013 A087813 A082779

Adjacent sequences:  A112894 A112895 A112896 * A112898 A112899 A112900

KEYWORD

base,nonn

AUTHOR

Ray G. Opao (1260(AT)email.com), Oct 05 2005

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 09 2005

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 14:07 EST 2012. Contains 205930 sequences.