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!)
A045221 Numbers whose base-5 representation contains exactly one 1 and no 2's. 0
1, 5, 8, 9, 16, 21, 25, 28, 29, 40, 43, 44, 45, 48, 49, 76, 80, 83, 84, 91, 96, 101, 105, 108, 109, 116, 121, 125, 128, 129, 140, 143, 144, 145, 148, 149, 200, 203, 204, 215, 218, 219, 220, 223, 224, 225, 228, 229, 240, 243, 244, 245 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
Select[Range[250], DigitCount[#, 5, 1]==1&&DigitCount[#, 5, 2]==0&] (* Harvey P. Dale, Dec 26 2021 *)
CROSSREFS
Cf. A007091.
Sequence in context: A287551 A231065 A314576 * A046287 A051220 A102785
KEYWORD
nonn,base
AUTHOR
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 July 23 14:46 EDT 2024. Contains 374549 sequences. (Running on oeis4.)