283360

Appears in sequences

• Coefficients of Chebyshev polynomials.at n=20A005584
• Triangle read by rows: T(n,k) is number of leaves at level k in all noncrossing rooted trees on n+1 nodes.at n=38A101372
• Numbers k not divisible by 6 such that sigma(k) > 3*k.at n=24A126104
• Coefficients of polynomials P(n,x):=-2+P(n-1,x)^2, where P(0,x)=x-2.at n=25A158982