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 A180275 #8 Sep 08 2022 08:45:54 %S A180275 5,37,757,1031,2237,6917,22037,27091,36037,117797,157627,166541, %T A180275 262337,422101,474787,493277,729271,1643387,1728361,1906997,2147077, %U A180275 2460781,2628487,2686037,3242237,3375451,4020157,4742137,5268547,5359901 %N A180275 Primes of the form n^3+3*n+1. %C A180275 Primes in A005491. %o A180275 (Magma) [ a: n in [0..250] | IsPrime(a) where a is (n^3+3*n+1)] // _Vincenzo Librandi_, Jan 30 2011 %K A180275 nonn %O A180275 1,1 %A A180275 Graziano Aglietti (mg5055(AT)mclink.it), Aug 23 2010 %E A180275 Definition corrected, incorrect program deleted - _R. J. Mathar_, Aug 25 2010