199229440

Appears in sequences

• Negated coefficients of Chebyshev T polynomials: [x^n](-T(n+6, x)), n >= 0.at n=18A001794
• Norm of a matrix.at n=12A004141
• Coefficients of (-x^(2n-6)) in Chebyshev polynomial of degree 2n.at n=9A068548
• a(1) = 4; a(n) = smallest composite number greater than the sum of all previous terms.at n=26A070232
• a(n) = 2^n*binomial(n,2).at n=20A100381