5304356domain: NAppears in sequencesNumber of normal linear lambda terms of size n with no free variables.at n=6A262301Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=28A318110Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=29A318110