1302100

Appears in sequences

• Expansion of (1-x)/(1 - x - 4*x^2).at n=16A052923
• a(0)=1, a(1)=4, a(n)=9*a(n-1)-16*a(n-2) for n>1.at n=8A165311
• Triangular array read by rows: row n shows the coefficients of the polynomial p(x,n) constructed as in Comments; these polynomials form a strong divisibility sequence.at n=38A327322