978945domain: NAppears in sequencesNumber of words of length 4 in the n(n-1)/2 transpositions of S[ n ] equivalent to the identity.at n=33A029699a(n) = Sum_{k=0..n} A363914(n, k)*(-2)^(n - k).at n=24A367773a(n) = Sum_{k=0..n} A363914(n, k)*2^(n - k).at n=24A367774