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 A220081 #25 Jun 21 2025 10:52:44
%S A220081 17,47,107,197,317,467,647,857,1097,1367,1667,1997,2357,3167,3617,
%T A220081 5147,5717,6317,6947,7607,8297,9767,12197,13967,14897,18917,19997,
%U A220081 21107,22247,23417,25847,27107,29717,33857,36767,41357,51347,53117,54917,56747,60497
%N A220081 Primes of the form 15*k^2 - 15*k + 17.
%C A220081 The formula gives consecutive primes for k from 0 to 13.
%H A220081 Vincenzo Librandi, <a href="/A220081/b220081.txt">Table of n, a(n) for n = 1..1000</a>
%H A220081 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Prime-GeneratingPolynomial.html">Prime-Generating Polynomial</a>
%t A220081 Select[Table[15 n^2 - 15 n + 17, {n, 1, 100}], PrimeQ]
%o A220081 (Magma) [a: n in [1..100] | IsPrime(a) where a is 15*n^2 - 15*n + 17 ];
%Y A220081 Cf. A000040, A005846, A156252.
%Y A220081 Subsequence of A030432, A039949, A141860.
%K A220081 nonn,easy
%O A220081 1,1
%A A220081 _Vincenzo Librandi_, Dec 17 2012