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 A094411 #24 Aug 24 2025 16:33:21 %S A094411 5777,10877,75077,80189,100127,113573,161027,162133,231703,430127, %T A094411 618449,635627,667589,851927,1033997,1106327,1256293,1388903,1697183, %U A094411 2263127,2435423,2512889,2662277,3175883,3399527,3452147,3774377 %N A094411 Composite numbers k that divide both Fibonacci(k+1) and Fibonacci(k) + 1. %C A094411 Also composites k that divide both Fibonacci(k+1) and Lucas(k) - 1. - _Gary Detlefs_, Feb 28 2013 %H A094411 Giovanni Resta, <a href="/A094411/b094411.txt">Table of n, a(n) for n = 1..548</a> (terms < 4*10^9) %t A094411 Select[Range[2, 50000], ! PrimeQ[ # ] && Mod[Fibonacci[ # + 1], # ] == 0 && Mod[Fibonacci[ # ] + 1, # ] == 0 &] %Y A094411 Cf. A000032, A000045, A002808, A069107, A094395, A094401, A094412. %K A094411 nonn,changed %O A094411 1,1 %A A094411 _Eric Rowland_, May 01 2004 %E A094411 More terms from _Gareth McCaughan_, Jun 11 2004 %E A094411 More terms from _Ryan Propper_, Aug 04 2005 %E A094411 Offset corrected by _Giovanni Resta_, Jul 20 2013