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, 1), (-1, 1, 1), (0, 1, 0), (1, 0, 0)}.
A149934
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, 1), (-1, 1, 1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =15a(4) =49a(5) =165a(6) =590a(7) =2198a(8) =8243a(9) =31318a(10) =122159a(11) =481187a(12) =1906550a(13) =7641233a(14) =30899086a(15) =125343131a(16) =512017159a(17) =2105778549a(18) =8688607252a(19) =35963536047a(20) =149624482747a(21) =624448244685
External references
- oeis: A149934