a(n) = Sum_{k=1..n} C(n,k)^3 where C(n,k) is binomial(n,k).
A096191
a(n) = Sum_{k=1..n} C(n,k)^3 where C(n,k) is binomial(n,k).
Terms
- a(0) =1a(1) =9a(2) =55a(3) =345a(4) =2251a(5) =15183a(6) =104959a(7) =739161a(8) =5280931a(9) =38165259a(10) =278415919a(11) =2046924399a(12) =15148345759a(13) =112738423359a(14) =843126957055
External references
- oeis: A096191