Hilbert series of combinatorial Hopf algebra H(Heap_1).
A247637
Hilbert series of combinatorial Hopf algebra H(Heap_1).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =85a(5) =411a(6) =2014a(7) =9950a(8) =49417a(9) =246302a(10) =1230623
External references
- oeis: A247637