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 A180276 #18 Sep 09 2024 12:04:42
%S A180276 3,13,139,233,8059,9323,19763,42979,103963,125149,175783,185363,
%T A180276 216179,373463,422099,456763,636313,729269,778963,885023,1061513,
%U A180276 1331329,1367963,1561243,2000753,2744419,3724339,4657963,6435413,6968443
%N A180276 Primes of the form n^3 + 3*n - 1.
%C A180276 Subsequence of primes in the sequence defined as b(n) = n^3 + 3*n - 1 = 3, 13, 35, 75, 139, 233, 363, 535, ... = A079908(n) - 1.
%H A180276 Harvey P. Dale, <a href="/A180276/b180276.txt">Table of n, a(n) for n = 1..1000</a>
%t A180276 Select[Table[n^3+3n-1,{n,200}],PrimeQ] (* _Harvey P. Dale_, Sep 08 2024 *)
%o A180276 (PARI) a(n)=n^3+3*n-1;
%o A180276 for(i=0,10^3,if(isprime(a(i)),print1(a(i), ", ")))
%o A180276 (Magma) [ a: n in [0..250] | IsPrime(a) where a is (n^3+3*n-1)]; // _Vincenzo Librandi_, Jan 30 2011
%K A180276 nonn
%O A180276 1,1
%A A180276 Graziano Aglietti (mg5055(AT)mclink.it), Aug 23 2010
%E A180276 Offset set to 1 by _R. J. Mathar_, Aug 25 2010