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 A250490 #19 Aug 24 2017 15:57:34 %S A250490 0,1,987,37889062373143906, %T A250490 141693817714056513234709965875411919657707794958199867 %N A250490 (n^4)-th Fibonacci number. %H A250490 Alois P. Heinz, <a href="/A250490/b250490.txt">Table of n, a(n) for n = 0..8</a> %F A250490 a(n) = A000045(n^4). %p A250490 a:= n-> (<<0|1>, <1|1>>^(n^4))[1, 2]: %p A250490 seq(a(n), n=0..5); %t A250490 Fibonacci[Range[0, 5]^4] (* _Alonso del Arte_, Aug 22 2017 *) %o A250490 (PARI) a(n) = fibonacci(n^4) \\ _Felix Fröhlich_, Aug 22 2017 %Y A250490 Column k = 4 of A250486. %Y A250490 Cf. A000045. %K A250490 nonn %O A250490 0,3 %A A250490 _Alois P. Heinz_, Nov 24 2014