173453domain: NAppears in sequencesExpansion of x^2*(1+3*x+x^2-x^3+28*x^4+80*x^5)/(1-10*x^2+29*x^4-24*x^6).at n=13A122023Number of 2n-bead necklaces labeled with numbers 1..5 allowing reversal, with neighbors differing by exactly 1.at n=13A208668