-2280

Appears in sequences

• T(n, k) is the coefficient of z^k in the numerator of the polynomial part of z^n*exp(-n*s), where s = hypergeom([1, 1, 3/2], [2, 5/2], 1/z^2)/(6z^2); related to Chebyshev's quadrature. Triangle read by rows, T(n,k) for 0 <= k <= n.at n=48A101270
• a(n) = -n^2 - n + 72.at n=48A110678
• Triangle: p(x) = (t/log(1 + t))^a0*(1 + t)^x; a0=2; weights (n+1)!*n!.at n=16A137381
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j) = gcd(prime(i+1), prime(j+1)) (A204120).at n=32A204121
• Irregular triangle read by rows: row n gives numerators of coefficients of polynomials arising from Chebyshev quadrature.at n=28A324123
• a(1)=0; thereafter a(n) = (n-1)*sigma(n)-n*sigma(n-1) where sigma is the sum-of-divisors function A000203.at n=42A335153
• a(1) = 1; a(n) = -Sum_{k=2..n} k^2 * a(floor(n/k)).at n=30A360390
• a(1) = 1; a(n) = -Sum_{k=2..n} k^2 * a(floor(n/k)).at n=31A360390