login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A064931 Numbers n such that the digits of n are also digits of n^3. 1
1, 4, 5, 6, 9, 10, 11, 12, 21, 24, 25, 29, 32, 33, 34, 39, 40, 49, 50, 51, 54, 56, 59, 60, 61, 64, 65, 67, 71, 72, 73, 75, 76, 90, 97, 99, 100, 101, 102, 106, 109, 110, 114, 119, 120, 124, 125, 129, 137, 153, 176, 201, 202, 210, 212, 224, 228, 231, 233, 236 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Presumably if a digit d appears k times in n, then it should appear at least k times in n^3. - N. J. A. Sloane, Nov 24 2018

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

12^3 = 1728, which contains all digits of 12, so 12 is a term of the sequence.

MATHEMATICA

Select[Range[400], Min[DigitCount[#^3]-DigitCount[#]]>-1&] (* Harvey P. Dale, Nov 24 2018 *)

CROSSREFS

Sequence in context: A196551 A139546 A029776 * A177103 A114454 A008854

Adjacent sequences:  A064928 A064929 A064930 * A064932 A064933 A064934

KEYWORD

nonn,base

AUTHOR

Joseph L. Pe, Feb 14 2002

EXTENSIONS

Corrected and Mathematica program replaced by Harvey P. Dale, Nov 24 2018

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 21 06:42 EDT 2019. Contains 322310 sequences. (Running on oeis4.)