2883601domain: NAppears in sequencesa(n) = (n^8 + n^4)/2.at n=7A071231Triangular numbers of the form p*w, where p is a prime number and w is a prime power (A025475).at n=27A225674a(n) = (n^2 + (n+1)^2)*(n^2 + (n+1)^2 + 2*n*(n+1)).at n=24A272850Triangular numbers with exactly 10 divisors.at n=5A349699