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!)
A054035 Numbers n such that n^2 contains exactly 7 different digits. 10
1017, 1023, 1024, 1027, 1028, 1036, 1037, 1042, 1113, 1117, 1164, 1175, 1176, 1197, 1228, 1267, 1268, 1277, 1302, 1307, 1323, 1328, 1343, 1352, 1355, 1375, 1395, 1405, 1428, 1433, 1441, 1442, 1444, 1463, 1541, 1593, 1594, 1628, 1646, 1648, 1701, 1706 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MAPLE
f := []; for i from 0 to 200 do if nops({op(convert(i^2, base, 10))})=7 then f := [op(f), i] fi; od; f;
MATHEMATICA
Select[Range[2000], Count[DigitCount[#^2], 0]==3&] (* Harvey P. Dale, Jul 28 2012 *)
CROSSREFS
Sequence in context: A221808 A202905 A213314 * A087837 A235811 A051982
KEYWORD
nonn,base
AUTHOR
Asher Auel, Feb 29 2000
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 March 29 08:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)