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 A053860 #15 May 13 2019 15:32:07 %S A053860 1,25,8065,15450625,1157871796225,87966277381914625, %T A053860 163854915382616600346625,2899292808403896778002083610625, %U A053860 409353092294744973843137037325905690625,1655314633158965843313074656520358690270555930625,8042610863521667687144051842810375934526150927428955930625 %N A053860 Number of n X n matrices over GF(4) of order dividing 5 (i.e., number of solutions of X^5=I in GL(n,4)). %D A053860 V. Jovovic, The cycle index polynomials of some classical groups, Belgrade, 1995, unpublished. %H A053860 Kent E. Morrison, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL9/Morrison/morrison37.html">Integer Sequences and Matrices Over Finite Fields</a>, Journal of Integer Sequences, Vol. 9 (2006), Article 06.2.1. %o A053860 (PARI) \\ See A053725 for F(n,q,k). %o A053860 F(12, 4, 5) \\ _Andrew Howroyd_, Jul 09 2018 %Y A053860 Cf. A053725, A053770, A053856. %K A053860 nonn %O A053860 1,2 %A A053860 _Vladeta Jovovic_, Mar 28 2000 %E A053860 a(8)-a(11) from _Andrew Howroyd_, Jul 09 2018