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 A063636 #17 Feb 20 2020 01:29:17
%S A063636 2,5,13,31,73,173,409,967,2283,5392,12735,30073,71017,167706,396032,
%T A063636 935217,2208486,5215270,12315692,29083113,68678837,162182870,
%U A063636 382989640,904417737,2135753445,5043513182,11910094433,28125305569,66417005997
%N A063636 a(n) = floor((1287/545)^n).
%C A063636 The first eight terms are primes. Does there exist a number theta such that the floor of theta^n is always prime?
%D A063636 Richard Crandall and Carl Pomerance, Prime Numbers - a Computational Perspective, Springer, 2001, page 69, exercise 1.75.
%H A063636 Harry J. Smith, <a href="/A063636/b063636.txt">Table of n, a(n) for n = 1..300</a>
%e A063636 (1287/545)^3 = 13.16879..., so a(3)=13.
%o A063636 (PARI) { for (n=1, 300, write("b063636.txt", n, " ", 1287^n \ 545^n); ) } \\ _Harry J. Smith_, Aug 26 2009
%Y A063636 Cf. A000040, A051254, A060449, A060699.
%K A063636 nonn
%O A063636 1,1
%A A063636 _Jud McCranie_, Aug 10 2001