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 A064260 #12 Oct 17 2019 05:58:33
%S A064260 210,2466,4158,5850,14028,116958,156156,166026,176178,188868,208608,
%T A064260 225528,232860,241320,252036,284748,290106,290670,345378,350736,
%U A064260 399240,439566,444078,448308,450000,498786,582540,669678,708030,722976,746100,809268,813216,860028
%N A064260 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,47.
%C A064260 am+1, bm+1, cm+1 are primes and am | (N-1), bm | (N-1), cm |(N-1).
%D A064260 Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001.
%H A064260 Amiram Eldar, <a href="/A064260/b064260.txt">Table of n, a(n) for n = 1..10000</a>
%t A064260 carmQ[n_] := CompositeQ[n] && Divisible[n - 1, CarmichaelLambda[n]]; Select[Range[10^5], AllTrue[(v = {1, 2, 47}*# + 1), PrimeQ] && carmQ[Times @@ v] &] (* _Amiram Eldar_, Oct 17 2019 *)
%Y A064260 Cf. A087788.
%K A064260 nonn
%O A064260 1,1
%A A064260 _N. J. A. Sloane_, Sep 23 2001
%E A064260 Offset corrected and more terms added by _Amiram Eldar_, Oct 17 2019