a(n) = Sum_{m>=0} binomial(m,3)^n*2^(-m-1).
A062208
a(n) = Sum_{m>=0} binomial(m,3)^n*2^(-m-1).
Terms
- a(0) =1a(1) =1a(2) =63a(3) =16081a(4) =10681263a(5) =14638956721
External references
- oeis: A062208
A062208
a(n) = Sum_{m>=0} binomial(m,3)^n*2^(-m-1).