-8216

Appears in sequences

• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A202676 based on (1,4,7,10,13,...); by antidiagonals.at n=17A202677
• a(n) = coefficient of x^n*y^n in Product_{n>=1} (1 - (x^n + y^n))^3.at n=27A322214