23762752domain: NAppears in sequencesa(n) = 2*(2*n+2)^floor((n-1)/2).at n=12A152556Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(k^5).at n=25A343285Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(k^5).at n=25A343325