313155584

Appears in sequences

• Expansion of e.g.f.: tan(x)*(1+x).at n=14A009725
• Expansion of e.g.f. tan(x)*x (even powers only).at n=7A009752
• Expansion of e.g.f. x * (tan(x) + sec(x)).at n=13A065619
• E.g.f.: 2*x/(1+exp(-2*x)).at n=14A109573
• a(n) = n*4^n*(-Z(1-n, 1/4)/2 + Z(1-n, 3/4)/2 - Z(1-n, 1)*(1 - 2^(-n))) for n > 0 and a(0) = 0, where Z(n, c) is the Hurwitz zeta function.at n=14A243963