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 A106484 #12 Feb 16 2025 08:32:57 %S A106484 2,14,5474,328053267374,70609493887317824553444331216711874, %T A106484 704075595895578790602913140874091028795793004193695613020210569466609876113017694526357948165550233559374 %N A106484 Iterated Stella Octangula numbers A007588. %H A106484 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/StellaOctangulaNumber.html">Stella Octangula Number.</a>. %F A106484 a(0) = 2; a(n+1) = a(n)*(2*a(n)^2 - 1) = A007588(a(n)). %Y A106484 Cf. A007588, A106482, A106483. %K A106484 easy,nonn %O A106484 0,1 %A A106484 _Jonathan Vos Post_, May 03 2005