-960

Appears in sequences

• a(n) = Sum_{d|n, d == 1 mod 4} d^2 - Sum_{d|n, d == 3 mod 4} d^2.at n=30A002173
• Glaisher's function U(n).at n=5A002612
• Expansion of ( Sum_{n = -infinity..infinity} x^(n^2) )^(-8).at n=3A004409
• Coefficients in expansion of Eisenstein series E_2 (also called E_1 or G_2).at n=27A006352
• Expansion of cosh(x)/cos(sin(x)).at n=4A009181
• Expansion of exp(x)/cos(sin(x)).at n=8A009289
• Expansion of tan(sin(x))*exp(x).at n=8A009664
• Expansion of tan(sin(x))*sinh(x).at n=4A009666
• a(n) = 8^n - n^10.at n=2A024098
• Dirichlet inverse of the Jordan function J_2 (A007434).at n=30A046970
• Determinant of the n X n matrix whose element (i,j) equals |i-j| (mod 4).at n=7A071769
• A076341(A000290(n)), imaginary part of squares mapped as defined in A076340, A076341.at n=17A076350
• Sum_{d divides n} d^2*(-1)^bigomega(d), where bigomega(n) = A001222(n).at n=30A076792
• Coefficients of the polynomials in the numerator of the generating function f(x)=(x-x^2)/(x^3-2x^2-2x+1) for F(n)^2, (where F(n) is the Fibonacci sequence) and its successive derivatives starting with the constant.at n=32A079045
• Coefficients of the polynomials in the numerator of the generating function f(x)=(x-x^2)/(x^3-2x^2-2x+1) for F(n)^2, (where F(n) is the Fibonacci sequence) and its successive derivatives starting with the highest power of x.at n=26A079046
• Triangle of diagonals of symmetric Krawtchouk matrices.at n=62A099037
• Triangle of diagonals of symmetric Krawtchouk matrices.at n=58A099037
• Coefficient list of ChebyshevU(n, 1-x).at n=24A100551
• Triangle read by rows: T(n,k) is the coefficient of x^k in the monic characteristic polynomial of the n X n matrix with 2's on the diagonal and 1's elsewhere (n >= 1 and 0 <= k <= n). Row 0 consists of the single term 1.at n=58A103283
• Expansion of theta_4(q)^4 - theta_2(q)^4, where theta_2 and theta_4 are the Jacobi theta series.at n=27A103640