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 A262585 #13 Oct 19 2023 08:49:17 %S A262585 0,2,38,466,5826,76258,1032442,14316582,202116106,2893451650, %T A262585 41886157562,611902123282,9007199254738,133439988963010, %U A262585 1987795697598010,29752813022112178,447193795726343002,6746237832670921766,102105221251235572186 %N A262585 a(0)=0; thereafter a(n) = A002705(n) - 2. %H A262585 Alexander Rosa and Štefan Znám, <a href="/A002703/a002703.pdf">A combinatorial problem in the theory of congruences (Russian with English summary)</a>, Mat.-Fys. Casopis Sloven. Akad. Vied 15 1965 49-59. [Annotated scanned copy.] %H A262585 Alexander Rosa and Štefan Znám, <a href="/A002703/a002703_1.pdf">A remark on a combinatorial problem (Russian with English summary)</a>, Mat.-Fyz. Casopis Sloven. Akad. Vied 15 1965 313-316. [Annotated scanned copy] See Table 2. %Y A262585 Cf. A002705. %K A262585 nonn %O A262585 0,2 %A A262585 _N. J. A. Sloane_, Oct 20 2015 %E A262585 More terms from _R. J. Mathar_, Oct 21 2015