Sum of the areas of all D-elevated skew paths of semi-length n.
A305554
Sum of the areas of all D-elevated skew paths of semi-length n.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =22a(4) =116a(5) =600a(6) =3072a(7) =15634a(8) =79256a(9) =400718a(10) =2022160a(11) =10189974a(12) =51292608a(13) =257965512a(14) =1296483996a(15) =6512176890a(16) =32694946020a(17) =164082802440a(18) =823188507360
External references
- oeis: A305554