-245760

Appears in sequences

• Determinant of the symmetric n X n matrix A defined by A[i,j] = |i-j| for 1 <= i,j <= n.at n=15A085750
• Triangle T(n, k) = binomial(2*n-k, k)*(-4)^(n-k), read by rows.at n=37A117438
• Column 0 of triangle A118441, which is the matrix log of triangle A118435.at n=15A118442
• Triangle of coefficients of a polynomial sequence related to the coloring of labeled graphs.at n=26A219765
• Chebyshev coefficients of density of states of triangular lattice.at n=9A288460
• Irregular triangle T(n,k) read by rows of the coefficients of Pi^(2k) in the expansion of Sum_{k>=1} (1 / (4k^2-1)^n) with denominator 2^(2n)*(n-1)!.at n=11A382784