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.
%I A067826 #16 Feb 16 2021 00:58:30 %S A067826 31,37,67,73,97,127,157,199,229,241,277,283,307,313,331,337,367,379, %T A067826 397,409,457,487,499,547,577,607,619,643,661,727,757,769,787,823,829, %U A067826 877,907,937,967,997,1039,1087,1117,1123,1237,1249,1291,1297,1327,1447 %N A067826 Primes p such that sigma(2*p+1) > 3*(p+1). %C A067826 Equivalently sequence gives primes in A053224(k)/2 when A053224(k) is even. %o A067826 (PARI) isok(p) = isprime(p) && (sigma(2*p+1) > 3*(p+1)); \\ _Michel Marcus_, Nov 23 2013 %Y A067826 Cf. A053224. %K A067826 nonn %O A067826 1,1 %A A067826 _Benoit Cloitre_, Feb 08 2002