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!)
A045105 Numbers whose base-4 representation contains exactly four 1's and no 2's. 0
85, 277, 325, 337, 340, 343, 349, 373, 469, 853, 1045, 1093, 1105, 1108, 1111, 1117, 1141, 1237, 1285, 1297, 1300, 1303, 1309, 1333, 1345, 1348, 1351, 1357, 1360, 1363, 1372, 1375, 1393, 1396, 1399, 1405, 1477, 1489, 1492 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[1500], DigitCount[#, 4, 1]==4&&DigitCount[#, 4, 2]==0&] (* Harvey P. Dale, Aug 27 2023 *)
CROSSREFS
Cf. A007090.
Sequence in context: A027524 A043340 A045129 * A038472 A020200 A020298
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 May 26 14:42 EDT 2024. Contains 372826 sequences. (Running on oeis4.)