cp's OEIS Frontend

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.

A062960 Number of divisors of (n!)^n (A036740).

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%I A062960 #12 Jan 04 2024 21:58:50
%S A062960 1,1,3,16,65,576,2275,27840,78489,236800,767151,13264560,31184725,
%T A062960 640564848,2082421125,5514535936,10924376001,279876280320,
%U A062960 584912713825,16888996800000,37538691697521,91766133606400,272224952406045,9248286151802880,17279191734765625
%N A062960 Number of divisors of (n!)^n (A036740).
%C A062960 Divisible by n+1. Proof: Exponent of largest prime dividing n! in prime factorization of n! is 1, i.e., n! = p_1^e_1*p_2^e_2*...*p_(s-1)^e_(s-1)*p_s, p_1<p_2<....<p_(s-1)<p_s. Thus tau(n!^n) = (n*e_1+1)*(n*e_2+1)*...*(n*e_(s-1)+1)*(n+1). - _Vladeta Jovovic_, Oct 01 2004
%F A062960 a(n) = A000005(A036740(n)).
%o A062960 (PARI) for(n=0,22,print(numdiv((n!)^n)))
%Y A062960 Cf. A000005, A027423, A036740.
%K A062960 easy,nonn
%O A062960 0,3
%A A062960 _Jason Earls_, Jul 22 2001