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 A078512 #16 Jun 28 2019 04:26:18 %S A078512 7045248121,7279379941,24306384961,43234580143,52437986833, %T A078512 60518537641,80829302401,118805562613,144377609419,165321688501, %U A078512 167385219121,254302215553,364573433665,575687567521,588909469501,652270080001,2152302898747,4094040693601,6287912246305 %N A078512 Carmichael numbers that are unrestricted Perrin pseudoprimes. %C A078512 Intersection of A002997 and A013998. %H A078512 Amiram Eldar, <a href="/A078512/b078512.txt">Table of n, a(n) for n = 1..765</a> (terms below 2^64) %H A078512 Christian Holzbaur, <a href="https://web.archive.org/web/20060622092157/http://www.ai.univie.ac.at/carmichael.html">The 150 Carmichael numbers out of 246683 up to 10^16 that are Perrin pseudoprimes</a> (actually contains the correct number of terms: 108). %H A078512 H. Li, T. MacHenry, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL16/MacHenry/machenry7.html">Permanents and Determinants, Weighted Isobaric Polynomials, and Integer Sequences</a>, J. Int. Seq. 16 (2013) #13.3.5, example 49. %Y A078512 Cf. A002997, A013998. %K A078512 nonn %O A078512 1,1 %A A078512 _Lekraj Beedassy_, Jan 06 2003 %E A078512 More terms from _Amiram Eldar_, Jun 28 2019