A027857 - OEIS

%I #15 Dec 08 2019 01:56:36

%S 0,0,1,0,1,0,4,0,7,0,1,0,11,2,12,0,8,0,2,0,5,14,19,0,7,4,0,0,20,0,7,0,

%T 24,22,2,0,11,6,9,0,10,0,24,4,0,30,21,0,45,30,12,0,40,0,30,0,39,32,50,

%U 0,28,52,18,0,59,0,25,24,15,0,40,0,59,48,15,0,23,0,62,0,54,0,69,0,80

%N Number of positive divisors of n!, read mod n.

%t Table[Mod[DivisorSigma[0,n!],n],{n,90}] (* _Harvey P. Dale_, Sep 20 2011 *)

%Y Cf. A027423.

%K nonn

%O 1,7

%A _Leroy Quet_.

%E More terms from _James A. Sellers_