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, 1, 0), (0, 0, 1), (1, -1, 1), (1, 0, -1)}.
A148107
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, 1, 0), (0, 0, 1), (1, -1, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =27a(6) =84a(7) =265a(8) =892a(9) =3078a(10) =10917a(11) =39683a(12) =147762a(13) =559640a(14) =2154331a(15) =8416964a(16) =33261595a(17) =132862775a(18) =536061253a(19) =2182072592a(20) =8952086612a(21) =37000546739a(22) =153950290800a(23) =644361566782
External references
- oeis: A148107