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, 0), (1, 0, 1), (1, 1, 1)}.
A150717
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, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =28a(4) =116a(5) =465a(6) =2002a(7) =8437a(8) =37237a(9) =161422a(10) =722378a(11) =3192299a(12) =14420620a(13) =64571496a(14) =293843584a(15) =1328236546a(16) =6079201433a(17) =27679683068a(18) =127263421522a(19) =582803695151
External references
- oeis: A150717