The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A023735 Numbers with exactly 2 3's in their base-5 expansion. 4
18, 43, 68, 78, 83, 88, 90, 91, 92, 94, 98, 118, 143, 168, 193, 203, 208, 213, 215, 216, 217, 219, 223, 243, 268, 293, 318, 328, 333, 338, 340, 341, 342, 344, 348, 368, 378, 383, 388, 390, 391, 392, 394, 398, 403, 408, 413, 415, 416, 417, 419, 423 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MAPLE
seq(`if`(numboccur(3, convert(n, base, 5))=2, n, NULL), n=0..450); # Nathaniel Johnston, Jun 27 2011
MATHEMATICA
Select[ Range[ 450 ], (Count[ IntegerDigits[ #, 5 ], 3 ]==2)& ]
Select[Range[500], DigitCount[#, 5, 3]==2&] (* Harvey P. Dale, Mar 24 2021 *)
CROSSREFS
Sequence in context: A252747 A067750 A043362 * A045300 A045189 A044095
KEYWORD
nonn,base,easy
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 May 21 04:06 EDT 2024. Contains 372720 sequences. (Running on oeis4.)