202141domain: NAppears in sequencesExpansion of 1/((1-x)^2*(1-x^2)^2*(1-x^3)*(1-x^4)^2*(1-x^5)).at n=41A069957Number of n-bead necklaces labeled with numbers -1..1 allowing reversal, with sum zero and three times sum of squares <= n*(1)*(1+1).at n=16A208798