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, 1), (0, 1, -1), (0, 1, 1), (1, -1, 1), (1, 0, 0)}.
A150636
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, 1), (0, 1, -1), (0, 1, 1), (1, -1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =115a(5) =510a(6) =2328a(7) =10833a(8) =51111a(9) =243674a(10) =1171029a(11) =5662910a(12) =27521695a(13) =134294202a(14) =657460273a(15) =3227490486a(16) =15879933263a(17) =78282626958a(18) =386535501072
External references
- oeis: A150636