2824080domain: NAppears in sequencesa(n) = (n-th prime)^4-(n-th prime)^2.at n=12A138402Number of reduced words of length n in Coxeter group on 42 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.at n=4A162879Primitive bicentric quadrilaterals defined in A219192.at n=4A219193