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, -1), (1, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150495
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, -1), (1, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =101a(5) =400a(6) =1709a(7) =7174a(8) =31429a(9) =136100a(10) =605925a(11) =2675139a(12) =12047315a(13) =53901936a(14) =244790397a(15) =1106172831a(16) =5055272637a(17) =23016721470a(18) =105714938367a(19) =484154102327
External references
- oeis: A150495