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, 0, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150622
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, 0, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =492a(6) =2175a(7) =9814a(8) =44847a(9) =207390a(10) =967511a(11) =4545095a(12) =21477751a(13) =101986018a(14) =486313061a(15) =2327402037a(16) =11173247829a(17) =53789081140a(18) =259570188339
External references
- oeis: A150622