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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150753
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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =128a(5) =535a(6) =2457a(7) =10901a(8) =51128a(9) =234218a(10) =1112878a(11) =5199214a(12) =24921000a(13) =117962731a(14) =568978422a(15) =2718283582a(16) =13173006570a(17) =63364640061a(18) =308188534015
External references
- oeis: A150753