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 A114642 #10 Jun 18 2021 14:48:41
%S A114642 1,2,4,32,17179869184
%N A114642 a(n) = 2^(log_{2}(a(n-2))+a(n-1)), a(1)=1, a(2)=2.
%Y A114642 Cf. A112237, A112866.
%K A114642 nonn
%O A114642 1,2
%A A114642 _Yasutoshi Kohmoto_, Feb 18 2006
%E A114642 Definition adapted to offset by _Georg Fischer_, Jun 18 2021