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 A214915 #12 May 21 2021 18:38:23 %S A214915 1,1,2,3,9,41,642,45378,300467529,141919565128041, %T A214915 23889121268674415030529282, %U A214915 1882004232433803432495089121844337244861378,15480785260333522531462377514739365882017797041068613651703152050407493402249 %N A214915 a(0)=a(1)=1, a(n) = least k > a(n-1) such that k*a(n-2) is a Lucas number. %Y A214915 Cf. A214914, A214916, A214961, A214963. %K A214915 nonn %O A214915 0,3 %A A214915 _Alex Ratushnyak_, Aug 03 2012