53780domain: NAppears in sequencesa(n) = (n^5-n-10)/10.at n=14A131176Number of groups of order prime(n)^6.at n=30A232106a(n) = 3*p^2+39*p+344+24*gcd(p-1,3)+11*gcd(p-1,4)+2*gcd(p-1,5), where p = prime(n).at n=30A269749