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 A053856 #15 Jan 16 2022 15:20:29 %S A053856 1,16,316,69616,21999616,74351051776,374910580965376, %T A053856 20054412250260176896,1616592330896738401386496, %U A053856 1379799701868277127827135922176,1779219416300608052895431535861170176 %N A053856 Number of n X n matrices over GF(4) of order dividing 2 (i.e., number of solutions of X^2=I in GL(n,4)). %D A053856 V. Jovovic, The cycle index polynomials of some classical groups, Belgrade, 1995, unpublished. %H A053856 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. %Y A053856 Cf. A053722. %K A053856 nonn %O A053856 1,2 %A A053856 _Vladeta Jovovic_, Mar 28 2000 %E A053856 More terms from _Sean A. Irvine_, Jan 16 2022