This site is supported by donations to The OEIS Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A088036 Numbers n such that n^3 - 1 is divisible by a cube other than 1. 2
 9, 10, 17, 18, 19, 25, 28, 33, 37, 41, 46, 49, 55, 57, 64, 65, 73, 81, 82, 89, 91, 97, 100, 105, 109, 113, 118, 121, 126, 127, 129, 136, 137, 145, 153, 154, 161, 163, 169, 172, 177, 181, 185, 190, 193, 199, 201, 208, 209, 217, 225, 226, 233, 235, 241, 244, 249 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. J. Mathar, Table of n, a(n) for n = 1..1185 MAPLE isA046099 := proc(n)     local p;     for p in ifactors(n)[2] do         if op(2, p) >= 3 then             return true;         end if;     end do:     false ; end proc: n := 1; for i from 1 to 5000 do     if isA046099(i^3-1) then         printf("%d %d\n", n, i) ;         n := n+1;     end if; end do: # R. J. Mathar, Dec 03 2015 MATHEMATICA n3dcQ[n_]:=Count[Divisors[n^3-1]], _?(IntegerQ[Surd[#, 3]]&)>1; Select[ Range[ 2, 250], n3dcQ] (* Harvey P. Dale, Oct 05 2017 *) CROSSREFS Cf. A088035. Sequence in context: A173015 A045568 A191380 * A217935 A100595 A107433 Adjacent sequences:  A088033 A088034 A088035 * A088037 A088038 A088039 KEYWORD nonn AUTHOR Amarnath Murthy, Sep 19 2003 EXTENSIONS Corrected and extended by Ray Chandler, Sep 23 2003 Definition clarified by Harvey P. Dale, Oct 05 2017 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.

Last modified January 16 15:53 EST 2019. Contains 319195 sequences. (Running on oeis4.)