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 A260026 #14 Jan 20 2025 00:48:04 %S A260026 6,110,1101110,100001100110100110110, %T A260026 1010110101111001011010001101011100010111010110010110001101100011110 %N A260026 Convert the last term from decimal to binary! a(1)=6. %o A260026 (PARI) a(n) = my(k=6); for(i=2, n, k=fromdigits(binary(k))); k; \\ _Jinyuan Wang_, Jan 18 2025 %Y A260026 For initial terms 2 through 12 see A008559, A006938, A260025, A260024, A260026, A260027, A260028, A260029, A008559 (again), A006938 (again), A260030 respectively. %K A260026 nonn,base %O A260026 1,1 %A A260026 _N. J. A. Sloane_, Jul 14 2015