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, 1, 1), (1, 0, -1), (1, 1, 1)}.
A150739
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, 1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =122a(5) =516a(6) =2275a(7) =10063a(8) =45677a(9) =208078a(10) =959078a(11) =4449565a(12) =20770805a(13) =97420555a(14) =459170757a(15) =2171832581a(16) =10307926187a(17) =49070391239a(18) =234218338080
External references
- oeis: A150739