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, -1), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 1)}.
A151248
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, -1), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =77a(4) =359a(5) =1702a(6) =8165a(7) =39490a(8) =192131a(9) =939016a(10) =4605451a(11) =22650627a(12) =111651643a(13) =551379076a(14) =2727090199a(15) =13505347559a(16) =66955102057a(17) =332249446722
External references
- oeis: A151248