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), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
A150669
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), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =24a(4) =112a(5) =400a(6) =1888a(7) =7168a(8) =34816a(9) =139008a(10) =676864a(11) =2770944a(12) =13638656a(13) =57175040a(14) =281647104a(15) =1197072384a(16) =5927944192a(17) =25544916992a(18) =126540709888a(19) =550109839360
External references
- oeis: A150669