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 A054752 #9 Apr 15 2021 15:21:36 %S A054752 1,5,120,252375,19076074375,37252918396015625, %T A054752 1818989403666496277343750,2220446049250331744551658935546875, %U A054752 67762635780344027129112510010600128173828125,51698788284564229679463057470911735435947895050048828125 %N A054752 Number of inequivalent n X n matrices over GF(5) under action of dihedral group of the square D_4. %H A054752 Andrew Howroyd, <a href="/A054752/b054752.txt">Table of n, a(n) for n = 0..25</a> %F A054752 a(n) = 1/8*(5^(n^2) + 2*5^(n^2/4) + 3*5^(n^2/2) + 2*5^((n^2+n)/2)) if n is even; %F A054752 a(n) = 1/8*(5^(n^2) + 2*5^((n^2+3)/4) + 5^((n^2+1)/2) + 4*5^((n^2+n)/2)) if n is odd. %Y A054752 Column k=5 of A343097. %Y A054752 Cf. A054247. %K A054752 easy,nonn %O A054752 0,2 %A A054752 _Vladeta Jovovic_, May 15 2000 %E A054752 Terms a(9) and beyond from _Andrew Howroyd_, Apr 15 2021