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 A341548 #15 Mar 24 2021 02:45:29
%S A341548 1,6,6,28,6,36,6,79,35,36,6,168,6,36,36
%N A341548 Number of commutative rings with additive group (Z/nZ)^2.
%C A341548 It appears that a(16)=230, but it is preferable to wait for someone to confirm it.
%H A341548 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 A341548 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 A341548 Christof Nöbauer, <a href="/A341201/a341201_2.pdf">Numbers of rings on groups of prime power order</a>
%H A341548 Christof Nöbauer, <a href="https://web.archive.org/web/20070613192932/http://www.algebra.uni-linz.ac.at/~noebsi/">Home page</a>
%t A341548 Clear[phi]; phi[p_, 1] := 6; phi[2,2] = 28; phi[2,3] = 79; phi[3,2] = 35; phi[n_]:= Module[{aux = FactorInteger[n]}, Product[phi[aux[[i, 1]], aux[[i, 2]]], {i, Length[aux]}]];
%Y A341548 Cf. A341547, A341201, A341202, A037234, A037291, A127708, A127707, A037289, A037290, A038036, A307000, A339948, A000005.
%K A341548 nonn,mult,more
%O A341548 1,2
%A A341548 _José María Grau Ribas_, Feb 14 2021