-4289domain: ZAppears in sequencesA nonsense sequence.at n=30A089075G.f.: Product_{i>=1} (1 - 2*(-x)^i)/(1 - (-x)^i)^2.at n=33A104510a(n) = 2*n^3 - 163*n^2 + 2777*n - 11927.at n=19A218458Expansion of e.g.f. Product_{k>=1} (1 + x^k)^(1/k!).at n=8A298906