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!)
A038855 Numbers that are divisible by 7 and are differences between two cubes in at least one way. 1

%I #13 Jan 02 2014 00:03:04

%S 7,56,63,91,98,189,217,448,469,504,511,602,665,721,728,784,819,875,

%T 973,1141,1197,1267,1323,1330,1512,1519,1603,1701,1736,1946,1981,2044,

%U 2072,2107,2170,2401,2457,2611,2646,2716,2765,2863,3087,3185,3311,3367

%N Numbers that are divisible by 7 and are differences between two cubes in at least one way.

%o (PARI) v=vector(3367); for(i=1, 33, for(j=i+1, 34, d=j^3-i^3; if(d<=3367, v[d]++, next(2)))); forstep(n=7, 3367, 7, if(v[n]>0, print1(n ", "))) \\ _Donovan Johnson_, Dec 31 2013

%K nonn

%O 1,1

%A _Jeff Burch_

%E 2014 changed to 2044 by _Donovan Johnson_, Dec 31 2013

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 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)