a(n) = Sum_{k=0..n} C(n+k,2k)*A000108(k)*3^k*2^(n-k).
A152601
a(n) = Sum_{k=0..n} C(n+k,2k)*A000108(k)*3^k*2^(n-k).
Terms
- a(0) =1a(1) =5a(2) =40a(3) =395a(4) =4360a(5) =51530a(6) =637840a(7) =8163095a(8) =107140360a(9) =1434252230a(10) =19507077040a(11) =268796321870
External references
- oeis: A152601