login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A023404 If any power of 2 ends with k 4's and 7's, they must be the first k terms of this sequence in reverse order. 3
4, 4, 7, 7, 4, 4, 4, 4, 4, 4, 7, 4, 4, 4, 4, 7, 7, 4, 7, 7, 7, 4, 7, 4, 4, 7, 4, 7, 4, 4, 7, 7, 4, 4, 7, 4, 7, 7, 4, 4, 4, 4, 4, 4, 7, 4, 7, 4, 4, 4, 4, 4, 7, 4, 7, 4, 4, 7, 7, 4, 4, 4, 7, 4, 7, 7, 4, 4, 4, 7, 7, 4, 7, 4, 4, 7, 4, 7, 7, 7, 7, 7, 4, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 7, 4, 7, 4, 7, 7, 4, 7, 7, 7, 4, 4, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Ray Chandler, Table of n, a(n) for n = 1..10000

CROSSREFS

Sequence in context: A237708 A342819 A016711 * A140245 A200364 A147814

Adjacent sequences:  A023401 A023402 A023403 * A023405 A023406 A023407

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 24 18:12 EDT 2022. Contains 354043 sequences. (Running on oeis4.)