Hilbert series of combinatorial Hopf algebra H(Heap_2).
A247638
Hilbert series of combinatorial Hopf algebra H(Heap_2).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =42a(4) =313a(5) =2407a(6) =18848a(7) =149271a(8) =1191092a(9) =9553551a(10) =76910632
External references
- oeis: A247638