Column 2 of triangular matrix T=A101479, in which row n equals row (n-1) of T^(n-1) followed by '1'.

A101483

Column 2 of triangular matrix T=A101479, in which row n equals row (n-1) of T^(n-1) followed by '1'.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =18a(4) =170a(5) =2220a(6) =37149a(7) =758814a(8) =18301950a(9) =508907970a(10) =16023271660a(11) =563336380167

External references