6351345domain: NAppears in sequencesNumber of cycle types of direct products of two degree-n permutations.at n=28A053391Even order Taylor coefficients at x = 0 of exp( -(-2^(1/3)+(-3*x^2+2)^(1/3))/(-3*x^2+2)^(1/3) ), odd order coefficients being equal to zero.at n=4A081022