Sum of all proper base 4 numbers with n digits (those not beginning with 0).

A121544

Sum of all proper base 4 numbers with n digits (those not beginning with 0).

Terms

    a(0) =6a(1) =114a(2) =1896a(3) =30624a(4) =491136a(5) =7862784a(6) =125822976a(7) =2013241344a(8) =32212156416a(9) =515395682304

External references