-3808

Appears in sequences

• E.g.f.: log(sec(x)+arcsinh(x)) = x-2/3!*x^3+12/4!*x^4-32/5!*x^5+72/6!*x^6...at n=8A013198
• Glaisher's chi_4(n).at n=51A030212
• Eighth convolution of A115140.at n=13A115147
• Expansion of -x*(2*x - 1)*(2*x^2 - 1)*(x^3 + 2*x^2 - x - 1)/((x - 1)*(x^2 + x - 1)*(x^4 - 4*x^3 - 4*x^2 + x + 1)).at n=18A122605
• Irregular triangle read by rows: T(n, k) = coefficients of f(n, x), where f(n, x) = (1-x)^(2*n+2) * Sum_{k >=0} (k^n * x^k).at n=60A141581
• Irregular triangle read by rows: T(n, k) = coefficients of f(n, x), where f(n, x) = (1-x)^(2*n+2) * Sum_{k >=0} (k^n * x^k).at n=68A141581
• Irregular triangle T(n, k) = ((-1)^(k+1)/2)*Sum_{j=0..n-2*k} binomial(n+2, j)*binomial(n+2, j+k+1)* binomial(n+2, j+2*k+2), read by rows.at n=14A158193