124506domain: NAppears in sequencesG.f.: Product_{k>=1} (1 + 3*x^(k^2)) / (1-x^k).at n=33A280225Starts of runs of 3 consecutive lazy-Pell-Niven numbers (A352342).at n=7A352344Number of sets of integer-sided rectangular pieces that can tile a 3 X n rectangle.at n=13A360632