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, 0)}.
A150329
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, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =87a(5) =327a(6) =1364a(7) =5609a(8) =24137a(9) =104261a(10) =459753a(11) =2043417a(12) =9186095a(13) =41589648a(14) =189744503a(15) =870532638a(16) =4016599027a(17) =18615600044a(18) =86650307518a(19) =404816959986
External references
- oeis: A150329