63920

Appears in sequences

• Denominators of continued fraction convergents to sqrt(399).at n=7A041759
• Number of subsequences of {1..n} such that all differences of pairs of terms are distinct (i.e., number of Golomb rulers on {1..n}).at n=27A054578
• Chebyshev polynomial of the second kind U(3,n).at n=20A144138
• a(n) = n^3 - 2*n.at n=40A242135
• Number of North-East lattice paths from (0,0) to (n,n) that have exactly three east steps below the subdiagonal y = x-1.at n=7A268370