-52521875

Appears in sequences

• Determinant of the symmetric n X n matrix M_n where M_n(j,k) = n^abs(j-k).at n=5A174841
• Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 2^n-1 as Sum(k=0..n)T(n,k)*binomial(n,k).at n=72A244126