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, -1), (-1, -1, 0), (0, 0, -1), (0, 1, 0), (1, 1, 1)}.
A150453
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, -1), (-1, -1, 0), (0, 0, -1), (0, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =95a(5) =376a(6) =1523a(7) =6290a(8) =26373a(9) =111886a(10) =479365a(11) =2070771a(12) =9008071a(13) =39423578a(14) =173448057a(15) =766653471a(16) =3402677801a(17) =15158156612a(18) =67751162313a(19) =303735992197
External references
- oeis: A150453