363660

Appears in sequences

• Triangle formed from coefficients of the polynomials p(1)=x, p(n+1) = (n + x*(n+1))*p(n) + x*x*(d/dx)p(n).at n=30A075856
• Numbers n such that sigma(n) = 15*phi(n) (where sigma=A000203, phi=A000010).at n=10A171260
• Coefficients of a set of polynomials associated with the derivatives of x^x.at n=27A185164
• Triangle read by rows: T(0,0)=1; T(m,0)=0; otherwise T(m,n) = (m-1)*T(m-1,n)+(m-1+n)*T(m-1,n-1).at n=39A239098