1916640domain: NAppears in sequencesNumber of Hamiltonian cycles in O_5 X P_n.at n=4A003743Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*12^j.at n=17A038326Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*11^j.at n=18A038337Expansion of (1-x)/(1-2*x-2*x^3+2*x^4).at n=19A052971