4147412

Appears in sequences

• Antidiagonal triangular matrices of factorials as the example: M(3)={{0, 0, 1}, {0, 1, 2}, {1, 2, 6}}; the matrices are used to get characteristic polynomials and the triangular sequence is the coefficients of those characteristic polynomials.at n=42A137296
• Number of compositions of n with difference 3 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=20A242843