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, 0, 1), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
A150962
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, 0, 1), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =166a(5) =727a(6) =3538a(7) =16294a(8) =80160a(9) =378927a(10) =1874930a(11) =9000443a(12) =44683110a(13) =216630208a(14) =1077697787a(15) =5260220811a(16) =26204060817a(17) =128518455419a(18) =640809487729
External references
- oeis: A150962