a(n) = (1/(n+1)) * Sum_{k=0..n} (k+1)^5 * binomial(2*n-k,n-k).
A390964
a(n) = (1/(n+1)) * Sum_{k=0..n} (k+1)^5 * binomial(2*n-k,n-k).
Terms
- a(0) =1a(1) =17a(2) =115a(3) =584a(4) =2616a(5) =10987a(6) =44499a(7) =176360a(8) =689622a(9) =2673794a(10) =10310806a(11) =39625412a(12) =151966750a(13) =582114015a(14) =2228543715a(15) =8530503120a(16) =32658701190a(17) =125079173550a(18) =479287564890
External references
- oeis: A390964