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!)
A117688 Cubes for which the sum of the digits is a square. 0

%I #5 Nov 21 2013 12:48:57

%S 0,1,27,216,1000,27000,216000,287496,884736,970299,1000000,1860867,

%T 2146689,3581577,3796416,4019679,5000211,6128487,6434856,6751269,

%U 7414875,7762392,10077696,14348907,15438249,16581375,21717639,22425768

%N Cubes for which the sum of the digits is a square.

%e 216 is in the sequence because it is a cube and the sum of its digits 2+1+6=9 is a square.

%t Select[Range[0,300]^3,IntegerQ[Sqrt[Total[IntegerDigits[#]]]]&] (* _Harvey P. Dale_, Mar 29 2012 *)

%Y Cf. A000290, A000578.

%K nonn,base

%O 0,3

%A Luc Stevens (lms022(AT)yahoo.com), Apr 12 2006

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 April 19 16:52 EDT 2024. Contains 371794 sequences. (Running on oeis4.)