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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A154731 Integers of the form k=n^3-n^2, such that k-+1 are primes. 2

%I

%S 4,18,180,2028,8820,34848,108288,191748,720900,875520,960498,990000,

%T 1355310,1629108,1713600,1756920,2334948,2609028,7376850,8448048,

%U 21639798,37148148,42023088,48893940,60544008,63840000,100328400

%N Integers of the form k=n^3-n^2, such that k-+1 are primes.

%t lst={};Do[k=n^3-n^2;If[PrimeQ[k-1]&&PrimeQ[k+1],AppendTo[lst,p]],{n,7!}];lst

%Y Cf. A111503

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Jan 14 2009

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 October 16 15:51 EDT 2019. Contains 328101 sequences. (Running on oeis4.)