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 A018251 #18 Jul 08 2025 06:33:21 %S A018251 1,2,3,6,9,18 %N A018251 Divisors of 18. %H A018251 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %F A018251 a(n) = A161704(n-1). - _Reinhard Zumkeller_, Jun 21 2009 %t A018251 Divisors[18] (* _Harvey P. Dale_, Jun 28 2022 *) %o A018251 (PARI) divisors(18) \\ _Charles R Greathouse IV_, Jun 21 2017 %K A018251 nonn,fini,full,easy %O A018251 1,2 %A A018251 _N. J. A. Sloane_