-5056

Appears in sequences

• Expansion of (1-x)/(1+2*x+2*x^2+2*x^3).at n=19A078071
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of M (as in A204026), given by min(F(i+1),F(j+1)), where F=A000045 (Fibonacci numbers).at n=30A204027