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 A260024 #15 Jun 23 2025 13:42:42 %S A260024 5,101,1100101,100001100100101000101, %T A260024 1010110101111001011010001101011011001100110110011001100101110100101 %N A260024 Convert the last term from decimal to binary! a(1)=5. %D A260024 C. Pickover, Mazes for the Mind, St. Martin's Press, NY, 1992, p. 350. %t A260024 NestList[FromDigits[IntegerDigits[#,2]]&,5,5] (* _Harvey P. Dale_, Jun 23 2025 *) %Y A260024 For initial terms 2 through 12 see A008559, A006938, A260025, A260024, A260026, A260027, A260028, A260029, A008559 (again), A006938 (again), A260030 respectively. %K A260024 nonn,base %O A260024 1,1 %A A260024 _N. J. A. Sloane_, Jul 14 2015