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 A064253 #12 Oct 17 2019 06:07:24
%S A064253 576,1170,2556,6120,20706,23676,29220,29286,32586,39450,46380,46446,
%T A064253 50076,52386,58920,63210,65256,65850,69876,74100,77796,93240,107826,
%U A064253 113370,114030,116340,127296,128220,129606,130530,140826,141156,149340,170196,174090,177126,178446
%N A064253 Values of n such that N=(an+1)(bn+1)(cn+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,33.
%C A064253 an+1, bn+1, cn+1 are primes and an | (N-1), bn | (N-1), cn |(N-1).
%D A064253 Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001.
%H A064253 Amiram Eldar, <a href="/A064253/b064253.txt">Table of n, a(n) for n = 1..10000</a>
%t A064253 carmQ[n_] := CompositeQ[n] && Divisible[n - 1, CarmichaelLambda[n]]; Select[Range[10^5], AllTrue[(v = {1, 2, 33}*# + 1), PrimeQ] && carmQ[Times @@ v] &] (* _Amiram Eldar_, Oct 17 2019 *)
%Y A064253 Cf. A087788.
%K A064253 nonn
%O A064253 1,1
%A A064253 _N. J. A. Sloane_, Sep 23 2001
%E A064253 More terms from _Amiram Eldar_, Oct 17 2019