[seqfan] %C A170826

zak seidov zakseidov at yahoo.com
Mon Dec 28 14:56:56 CET 2009


A170826 1,2,3,8,5,36,7,64,81,100,11,144,13,196,225,256,17,324,
%N A170826 a(n) = GCD(n^2, n!).

%C A170826 If n is prime then a(n)=n else if n<>4 a(n)=n^2(due to The Fundamental Theorem of Arithmetic).
?
Zak




      




More information about the SeqFan mailing list