344056domain: NAppears in sequencesa(n) = T(3,n), array T given by A048505.at n=12A048508Expansion of Product_{k>0} ((1 - q^(2*k))^3*(1 - q^(6*k))*(1 - q^(12*k)))/((1 - q^k)^4*(1 - q^(4*k))).at n=20A293628