a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A008288.
A026934
a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A008288.
Terms
- a(0) =1a(1) =6a(2) =35a(3) =196a(4) =1093a(5) =6090a(6) =33991a(7) =190152a(8) =1066313a(9) =5993422a(10) =33759851a(11) =190538380a(12) =1077316493a(13) =6101144722a(14) =34603634063a(15) =196524445840
External references
- oeis: A026934