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, 0, 0), (0, -1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
A149768
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, 0, 0), (0, -1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =75a(5) =309a(6) =1309a(7) =5649a(8) =24721a(9) =109013a(10) =484499a(11) =2167671a(12) =9753219a(13) =44086523a(14) =200053085a(15) =910890547a(16) =4160129705a(17) =19051066455a(18) =87452693175a(19) =402311127209
External references
- oeis: A149768