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.

A319081 Number of primes of the form k^3 + n^2 for 0 <= k <= n.

This page as a plain text file.
%I A319081 #6 Sep 28 2018 21:40:23
%S A319081 0,1,1,1,2,1,1,1,0,2,4,1,2,1,3,2,4,3,3,4,3,2,2,3,5,3,4,0,3,3,2,3,7,7,
%T A319081 1,4,4,3,2,4,9,3,5,5,3,4,7,5,5,6,4,6,4,4,11,5,5,4,6,8,6,8,4,7,0,8,8,
%U A319081 10,7,4,3,3,12,6,13,9,3,5,5,9,11,12,7,3,8,3,8,12,11,8,4
%N A319081 Number of primes of the form k^3 + n^2 for 0 <= k <= n.
%F A319081 a(n) = 0 if n is a cube other than 1.
%o A319081 (PARI) for(n=0,90,a=sum(k=0,n,isprime(k^3+n^2));print1(a", "))
%Y A319081 Cf. A066649.
%K A319081 nonn
%O A319081 0,5
%A A319081 _Gionata Neri_, Sep 09 2018