Number of permutations of 1..n with the number moved left exceeding the number moved right by 3 or more.

A179569

Number of permutations of 1..n with the number moved left exceeding the number moved right by 3 or more.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =7a(6) =142a(7) =1236a(8) =19389a(9) =197961a(10) =3119296a(11) =37007330a(12) =625269351a(13) =8518503575a(14) =156989400170

External references