373104

Appears in sequences

• Numbers of nonisomorphic systems of catafusenes (see Cyvin et al. (1994) for precise definition).at n=10A045906
• Chebyshev polynomial of the second kind U(3,n).at n=36A144138
• Numbers n such that sigma(n+sigma(n)) = 5*sigma(n).at n=13A246912
• Triangle read by rows: T(n,k) is the coefficient of x^k in the polynomial P(n) = n*(x + 1)*P(n - 1) - (n - 2)^2*x*P(n - 2).at n=30A299018
• Triangle read by rows: T(n,k) is the coefficient of x^k in the polynomial P(n) = n*(x + 1)*P(n - 1) - (n - 2)^2*x*P(n - 2).at n=33A299018