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 A065697 #12 Oct 17 2019 16:19:24 %S A065697 198,996,2706,9090,13536,16728,25620,33486,34056,35310,41010,53550, %T A065697 58566,60960,61986,63240,72816,72930,74526,75780,77490,80340,83760, %U A065697 96756,97326,100746,103140,111918,125028,125370,128676,129360,136656,164700,174048,175758,176898 %N A065697 Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,57. %H A065697 Amiram Eldar, <a href="/A065697/b065697.txt">Table of n, a(n) for n = 1..10000</a> %F A065697 am+1, bm+1, cm+1 are primes and am|(N-1), bm|(N-1), cm|(N-1). %t A065697 CarmichaelNbrQ[n_] := ! PrimeQ@n && Mod[n, CarmichaelLambda@n] == 1; Select[ Range@140000, PrimeQ[# +1] && PrimeQ[2# +1] && PrimeQ[57# +1] && CarmichaelNbrQ[(# +1) (2# +1) (57# +1)] &] (* _Robert G. Wilson v_, Jul 31 2017 *) %Y A065697 Cf. A064238-A064262, A065695-A065703, A087788. %K A065697 nonn %O A065697 1,1 %A A065697 Harvey Dubner (harvey(AT)dubner.com), Nov 14 2001 %E A065697 More terms from _Amiram Eldar_, Oct 17 2019