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), (0, 1, 1), (1, 0, 1)}.
A150483
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), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =409a(6) =1696a(7) =7230a(8) =31218a(9) =136348a(10) =601392a(11) =2668866a(12) =11926440a(13) =53590116a(14) =241861429a(15) =1096236518a(16) =4985474479a(17) =22743466843a(18) =104053210697a(19) =477225366201
External references
- oeis: A150483