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, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
A150876
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, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =147a(5) =673a(6) =3157a(7) =15018a(8) =72219a(9) =349962a(10) =1705743a(11) =8350942a(12) =41026930a(13) =202115652a(14) =997912715a(15) =4935914463a(16) =24450370176a(17) =121265130550a(18) =602048811255
External references
- oeis: A150876