A328711 Dirichlet g.f.: (1/2) * Product_{i>=1, j>=1} (1 + (i*j)^(-s))^i.
1, 3, 4, 10, 6, 24, 8, 37, 19, 36, 12, 104, 14, 48, 48, 118, 18, 144, 20, 156, 64, 72, 24, 412, 46, 84, 96, 208, 30, 360, 32, 376, 96, 108, 96, 720, 38, 120, 112, 618, 42, 480, 44, 312, 288, 144, 48, 1500, 85, 339, 144, 364, 54, 792, 144, 824, 160, 180, 60, 1848
Offset: 1
Keywords
Formula
Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^sigma(k), where sigma = A000203.