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 A113825 #9 Jul 09 2023 12:45:31 %S A113825 0,1,2,2,1,2,3,5,4,5,5,7,2 %N A113825 Number of distinct prime factors of A008351(n). %H A113825 Dario Alejandro Alpern, <a href="https://www.alpertron.com.ar/ECM.HTM">Factorization using the Elliptic Curve Method.</a> %e A113825 The number of distinct prime factors of 212 is 2 which is the third term in the sequence. %Y A113825 A008351: Concatenate a(n-1) and a(n-2) with a(1)=1 & a(2)=2. %Y A113825 Cf. A008351. %K A113825 hard,nonn,base %O A113825 1,3 %A A113825 _Parthasarathy Nambi_, Jan 23 2006 %E A113825 a(11)-a(13) from _Robert G. Wilson v_, Jan 27 2006