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 A064252 #10 Oct 17 2019 06:07:45
%S A064252 13158,15390,16878,25620,31386,36036,60960,92580,109320,110436,132756,
%T A064252 136848,177210,184650,236916,247518,265560,273186,278766,308526,
%U A064252 314850,317826,326940,333450,338286,364140,376416,389436,440958,447840,451746,467556,476298,494340
%N A064252 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,31.
%C A064252 am+1, bm+1, cm+1 are primes and am | (N-1), bm | (N-1), cm |(N-1).
%D A064252 Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001.
%H A064252 Amiram Eldar, <a href="/A064252/b064252.txt">Table of n, a(n) for n = 1..10000</a>
%t A064252 carmQ[n_] := CompositeQ[n] && Divisible[n - 1, CarmichaelLambda[n]]; Select[Range[10^5], AllTrue[(v = {1, 2, 31}*# + 1), PrimeQ] && carmQ[Times @@ v] &] (* _Amiram Eldar_, Oct 17 2019 *)
%Y A064252 Cf. A087788.
%K A064252 nonn
%O A064252 1,1
%A A064252 _N. J. A. Sloane_, Sep 23 2001
%E A064252 Offset corrected and more terms added by _Amiram Eldar_, Oct 17 2019