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 A336418 #5 Jul 30 2020 07:18:22 %S A336418 1,2,3,5,7,11,12,13,17,18,19,20,23,28,29,31,32,37,41,43,44,45,47,50, %T A336418 52,53,59,61,63,67,68,71,73,75,76,79,83,89,92,97,98,99,101,103,107, %U A336418 109,113,116,117,124,127,131,137,139,147,148,149,151,153,157,163 %N A336418 Numbers with a factorial number of divisors. %C A336418 Positive integers n such that A000005(n) belongs to A000142. %t A336418 nn=5;Select[Range[nn!],MemberQ[Array[Factorial,nn],Length[Divisors[#]]]&] %Y A336418 A000005 counts divisors. %Y A336418 A048656 counts squarefree divisors of n!. %Y A336418 A325617 counts permutations of the multiset of prime factors of n!. %Y A336418 A336414 counts divisors of n! with distinct prime exponents. %Y A336418 Cf. A000142, A001221, A001222, A002982, A007489, A022559, A027423, A032741, A054991, A090630, A108731, A181796, A251753, A336416. %K A336418 nonn %O A336418 1,2 %A A336418 _Gus Wiseman_, Jul 27 2020