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, 0, 0), (0, -1, 0), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
A150986
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, 0, 0), (0, -1, 0), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =37a(4) =163a(5) =742a(6) =3417a(7) =15920a(8) =75135a(9) =356274a(10) =1698999a(11) =8146005a(12) =39176567a(13) =188995010a(14) =914447693a(15) =4433447099a(16) =21536356139a(17) =104809992100a(18) =510795470725
External references
- oeis: A150986