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 A064262 #13 Oct 17 2019 05:57:58 %S A064262 330,1656,1758,6960,11958,14406,27258,30318,30930,31236,37356,40110, %T A064262 43986,44088,50820,53268,55818,63366,65100,67650,71526,74586,81930, %U A064262 90906,93150,94476,98250,99678,109470,119568,121710,129768,135276,141906,146190,147516,155166 %N A064262 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,51. %C A064262 am+1, bm+1, cm+1 are primes and am | (N-1), bm | (N-1), cm |(N-1). %D A064262 Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001. %H A064262 Amiram Eldar, <a href="/A064262/b064262.txt">Table of n, a(n) for n = 1..10000</a> %t A064262 CarmichaelNbrQ[n_] := ! PrimeQ@ n && Mod[n, CarmichaelLambda[n]] == 1; Select[ Range@ 9000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[51# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(51# + 1)] &] (* _Robert G. Wilson v_, Aug 23 2012 *) %Y A064262 Cf. A087788. %K A064262 nonn %O A064262 1,1 %A A064262 _N. J. A. Sloane_, Sep 23 2001 %E A064262 Offset corrected and more terms added by _Amiram Eldar_, Oct 17 2019