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, 0, 1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A151253
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, 0, 1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =4a(2) =19a(3) =91a(4) =445a(5) =2188a(6) =10819a(7) =53644a(8) =266581a(9) =1326646a(10) =6609307a(11) =32953033a(12) =164397313a(13) =820521562a(14) =4096733707a(15) =20459928259a(16) =102203137741a(17) =510621146326
External references
- oeis: A151253