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), (1, -1, 0), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
A149767
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), (1, -1, 0), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =75a(5) =303a(6) =1297a(7) =5557a(8) =24261a(9) =106399a(10) =472551a(11) =2107115a(12) =9466037a(13) =42670843a(14) =193357621a(15) =878695095a(16) =4008039183a(17) =18326746125a(18) =84037953711a(19) =386156408739
External references
- oeis: A149767