The number of 3D walks of length n in an octant returning to axis of origin.
A302179
The number of 3D walks of length n in an octant returning to axis of origin.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =40a(5) =120a(6) =570a(7) =1995a(8) =9898a(9) =38178a(10) =195216a(11) =805266a(12) =4209084a(13) =18239364a(14) =96941130a(15) =436235085a(16) =2349133930a(17) =10891439130a(18) =59272544760a(19) =281544587610
External references
- oeis: A302179