login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A065255 Consider the sequence b(k) such that b(k) and sigma(b(k)) end with the same digit in base 10. Sequence gives values of n such that b(n)/n = 10. 0
40, 290, 600, 790, 1350, 1400, 4580, 4590, 4640, 4740, 4750, 9080, 9480, 9570, 9600, 11000, 11020, 11080, 11160, 11210, 11240, 11290, 11310, 11570, 11590, 11720, 11780, 11800, 13870, 13880, 13990, 14060, 14250, 14290, 14310, 14320, 14340 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: lim n -> infinity b(k)/k = 10.

LINKS

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

EXAMPLE

b(k) begins 1,14,34,40,44,74,78,81,84 hence b(4)=40 and 40/4=10 so 40 is in the sequence.

CROSSREFS

Sequence in context: A229588 A117216 A035099 * A300920 A061993 A087954

Adjacent sequences:  A065252 A065253 A065254 * A065256 A065257 A065258

KEYWORD

base,nonn

AUTHOR

Benoit Cloitre, Aug 06 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 February 19 13:20 EST 2020. Contains 332044 sequences. (Running on oeis4.)