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 A341547 #27 Mar 08 2021 02:17:04
%S A341547 1,8,8,66,8,64,8,301,175,64,8,528,8,64,64
%N A341547 Number of rings with additive group (Z/nZ)^2.
%H A341547 B. Fine, <a href="https://doi.org/10.2307/2690742">Classification of Finite Rings of Order p^2</a>, Mathematics Magazine, 66(4) (1993), 248-252.
%H A341547 C. R. Fletcher, <a href="https://www.jstor.org/stable/3615885">Rings of Small Order</a>, The Mathematical Gazette, 64(427) (1980), 9-22.
%H A341547 Christof Nöbauer, <a href="/A341201/a341201_2.pdf">Numbers of rings on groups of prime power order</a>
%H A341547 Christof Nöbauer, <a href="https://web.archive.org/web/20070613192932/http://www.algebra.uni-linz.ac.at/~noebsi/">Home page</a>
%t A341547 Clear[phi]; phi[1] = 1; phi[p_,1] := 8; phi[2,2] = 66;
%t A341547 phi[2,3] = 301; phi[3,2] = 175; phi[n_]:= Module[{aux = FactorInteger[n]}, Product[phi[aux[[i, 1]], aux[[i, 2]]], {i, Length[aux]}]];
%Y A341547 Cf. A341548, A341201, A341202, A037234, A037291, A127708, A127707, A037289, A037290, A038036, A307000, A339948, A000005.
%K A341547 nonn,mult,more
%O A341547 1,2
%A A341547 _José María Grau Ribas_, Feb 14 2021