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 A363980 #35 Aug 08 2024 03:17:47 %S A363980 277699295941594831,315809464967513821,353919633993432811, %T A363980 392029803019351801,430139972045270791,468250141071189781, %U A363980 506360310097108771,544470479123027761,582580648148946751,620690817174865741,658800986200784731,696911155226703721,735021324252622711 %N A363980 Tom Greer's arithmetic progression of 27 primes. %C A363980 At the time of submission (June 2023), this sequence is the arithmetic progression of 27 primes having the largest known initial and final term and it was found by Tom Greer on 26 May 2023 as part of PrimeGrid's AP27, running the program AP26 (this is the second known AP27 to date, see A327760). %H A363980 Marco Ripà, <a href="/A363980/b363980.txt">Table of n, a(n) for n = 1..27</a> %H A363980 PrimeGrid, <a href="https://www.primegrid.com/download/AP27-81292139.pdf">Official announcement of the second known AP27</a> %H A363980 PrimeGrid forum, <a href="https://www.primegrid.com/forum_thread.php?id=7012">Message 163220 (World's Second AP27!!!)</a> %F A363980 a(n+1) = 277699295941594831 + n*170826477*223092870, for n = 0, 1, ..., 26. %e A363980 a(3) = 277699295941594831 + 2*170826477*223092870 is prime. %t A363980 A363980[n_]:=277699295941594831 + (n-1)*38110169025918990; %t A363980 Array[A363980, 27] (* _Paolo Xausa_, Jan 30 2024 *) %o A363980 (PARI) vector(27, t, 277699295941594831+170826477*223092870*(t-1)) %Y A363980 Cf. A033188, A033290, A204189, A260751, A261140, A327760, A374949. %K A363980 nonn,fini,full,easy %O A363980 1,1 %A A363980 _Marco Ripà_, Jun 30 2023