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), (0, 0, -1), (0, 1, 0), (1, 0, 1)}.
A150259
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), (0, 0, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =87a(5) =346a(6) =1427a(7) =6039a(8) =26002a(9) =112859a(10) =495420a(11) =2194216a(12) =9785788a(13) =43863661a(14) =197661583a(15) =894722412a(16) =4065031531a(17) =18527896651a(18) =84707265379a(19) =388318219755
External references
- oeis: A150259