cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A192228 Primes of the form (n+1)^6+(n+2)^6+(n+3)^6-666.

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%I A192228 #16 May 13 2013 01:49:39
%S A192228 425783,263145359,744158711,1805712959,32484102023,103206118583,
%T A192228 271979814143,324434645039,454854785303,626321908703,6944429711711,
%U A192228 21648847849679,23586002145119
%N A192228 Primes of the form (n+1)^6+(n+2)^6+(n+3)^6-666.
%C A192228 Sum of three consecutive numbers with exponent 6, the difference with 666 generate prime number of the form 3n^6 +36n^5 +210n^4 +720n^3 +1470n^2 +1656n +128.
%e A192228 425783 = 6^6+7^6+8^6-666 and 744158711 = 24^6+25^6+26^6-666 are in the sequence.
%t A192228 lst={};Do[If[PrimeQ[p=(n+1)^6+(n+2)^6+(n+3)^6-666],AppendTo[lst,p]],{n,200}];lst
%t A192228 Select[Total/@(Partition[Range[200],3,1]^6)-666,PrimeQ] (* _Harvey P. Dale_, Dec 14 2011 *)
%o A192228 (PARI) for(n=1,1e3,if(isprime(k=(n+1)^6+(n+2)^6+(n+3)^6-666),print1(k", "))) \\ _Charles R Greathouse IV_, Jul 01 2011
%K A192228 nonn
%O A192228 1,1
%A A192228 _Rafael Parra Machio_, Jun 26 2011