-7329domain: ZAppears in sequencesExpansion of Product_{m>=1} ((1+q^(2*m-1))/(1+q^(2*m)))^7.at n=16A029844Triangle T(n,k), read by rows, defined by T(n,k)=3*T(n-1,k)-T(n-1,k-1)-T(n-2,k), T(0,0)=1, T(1,0)=2, T(1,1)=-1, T(n,k)=0 if k<0 or if k>n.at n=50A123971