A154731 - OEIS

A154731

Integers of the form k = m^3-m^2 such that k-+1 are primes.

%I #7 Jul 16 2022 17:15:20

%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 = m^3-m^2 such that k-+1 are primes.

%F A045991 INTERSECT A014574. - _R. J. Mathar_, Jul 16 2022

%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