Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (1, -1, -1), (1, 1, 0), (1, 1, 1)}.
A150916
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (1, -1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =32a(4) =148a(5) =620a(6) =2914a(7) =13000a(8) =61949a(9) =284988a(10) =1370811a(11) =6424301a(12) =31092765a(13) =147537099a(14) =717177167a(15) =3433025298a(16) =16742449833a(17) =80662400336a(18) =394382553430
External references
- oeis: A150916