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, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
A151004
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, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =177a(5) =823a(6) =3950a(7) =18980a(8) =92410a(9) =450797a(10) =2213686a(11) =10886910a(12) =53736619a(13) =265556547a(14) =1315191824a(15) =6519528720a(16) =32362495781a(17) =160757651597a(18) =799283898700
External references
- oeis: A151004