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 A383321 #9 Jun 02 2025 15:30:06 %S A383321 0,1,5,433494437,2,3,34,701408733,24157817,1,3524578, %T A383321 74938658661142424746936931013871484819301255773627024651689719443505027723135990224027850523592585, %U A383321 81055900096023504197206408605,21,13 %N A383321 a(n) = Fibonacci(A383320(n)). %H A383321 Dominic McCarty, <a href="/A383321/b383321.txt">Table of n, a(n) for n = 1..34</a> %o A383321 (Python) %o A383321 from sympy import fibonacci %o A383321 from itertools import count %o A383321 a, b, sa, sb = [0,1,5,43], [0,1,5,433494437], "01543", "015433494437" %o A383321 for _ in range(10): %o A383321 a.append(next(n for k in count(1) if not (n := int(sb[len(sa):len(sa)+k])) in a and not (len(sb) > len(sa) + k and sb[len(sa) + k] == "0"))) %o A383321 b.append(fibonacci(a[-1])) %o A383321 sa += str(a[-1]); sb += str(b[-1]) %o A383321 print(b) %Y A383321 Cf. A383320, A038546, A383318, A383322, A302656. %K A383321 nonn,base %O A383321 1,3 %A A383321 _Dominic McCarty_, Apr 23 2025