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 A154261 #17 Jun 10 2025 01:41:07
%S A154261 3,2,19,107,499,1627,4139,5827,6779,10067,12619,16987,18587,22003,
%T A154261 23819,40939,43403,59699,65707,68819,89003,111779,124139,132739,
%U A154261 137147,175003,190387,195659,206419,223099,258403,296299
%N A154261 Primes of the form 9*k^2-10*k+3.
%C A154261 For all entries p = 9*k^2-10*k+3 in the sequence, 9*p-2 = (9*k-5)^2 is a perfect square.
%H A154261 Vincenzo Librandi, <a href="/A154261/b154261.txt">Table of n, a(n) for n = 1..1000</a>
%t A154261 Select[Table[9n^2-10n+3,{n,0,1500}],PrimeQ] (* _Vincenzo Librandi_, Jul 16 2012 *)
%o A154261 (Magma) [ a: n in [0..250] | IsPrime(a) where a is 9*n^2-10*n+3]; // _Vincenzo Librandi_, Jul 16 2012
%Y A154261 Cf. A154264 (associated n), A154262.
%K A154261 nonn,easy
%O A154261 1,1
%A A154261 _Vincenzo Librandi_, Jan 06 2009