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 A060353 #15 Jul 11 2025 18:40:05
%S A060353 2,17,4373,590489,6973568801,486306618362277152039,
%T A060353 407695153504015050412733,9266726751303003316378520780678994459797093,
%U A060353 23560801709989209203195024431348154965368236005496270061701
%N A060353 Primes of the form k*3^k - 1.
%H A060353 Harry J. Smith, <a href="/A060353/b060353.txt">Table of n, a(n) for n = 1..11</a>
%o A060353 (PARI) { allocatemem(932245000); n=0; for (m=1, 1172, a=m*3^m - 1; if (isprime(a), write("b060353.txt", n++, " ", a)); ) } \\ _Harry J. Smith_, Jul 04 2009
%Y A060353 Cf. A060352.
%K A060353 nonn
%O A060353 1,1
%A A060353 _Jason Earls_, Mar 31 2001
%E A060353 More terms from _William Rex Marshall_, Apr 01 2001