-1682

Appears in sequences

• Dirichlet inverse of sigma_2 function (A001157).at n=40A053822
• Triangle read by rows: T(n, k) = (-1)^(n+k) * A060187(n+1, k+1).at n=17A138076
• Triangle read by rows: real part of Lerch Phi expansion of p(x,n) = 2^n*(1 - i*x)^(n+1) * LerchPhi(i*x, -n, 1/2).at n=17A143196
• Expansion of Product_{k>=1} (1 - x^k)^k/(1 - x^(5*k))^(5*k).at n=34A285285
• Dirichlet g.f.: zeta(2*s) / (zeta(s) * zeta(s-2)).at n=40A328639