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), (-1, -1, 0), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150454
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), (-1, -1, 0), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =95a(5) =384a(6) =1559a(7) =6606a(8) =28013a(9) =121326a(10) =528787a(11) =2323865a(12) =10305291a(13) =45842790a(14) =205583679a(15) =924004141a(16) =4176135747a(17) =18927081330a(18) =86065623587a(19) =392613070741
External references
- oeis: A150454