-3016

Appears in sequences

• (1/18)*Difference between concatenation of n and n^2 and concatenation of n^2 and n.at n=28A055435
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A202874; by antidiagonals.at n=42A202875
• Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of 1/(1-3x+x^2)).at n=29A328645
• The q-analog T(q; n,k) of the triangle A163626 for 0 <= k <= n, for q=3.at n=13A329120