Sum of terms of odd index in the binomial decomposition of n^(n-1).

A345633

Sum of terms of odd index in the binomial decomposition of n^(n-1).

Terms

    a(0) =0a(1) =1a(2) =4a(3) =36a(4) =272a(5) =4400a(6) =51012a(7) =1188544a(8) =18640960a(9) =567108864a(10) =11225320100a(11) =421504185344

External references