123032domain: NAppears in sequencesTriangle of coefficients in expansion of (1+13x)^n.at n=39A123187a(n) = ((n-th prime)^5-(n-th prime)^3)/3.at n=5A138433Wiener index of the grid P_n x P_n, where P_n is the path graph on n vertices.at n=12A143945a(n) = 7*n^3.at n=26A244727a(n) = Sum_{d|n} max(d, n/d)^3.at n=38A297842