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, 0), (-1, 0, -1), (1, -1, 1), (1, 1, 0), (1, 1, 1)}.
A150914
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, 0), (-1, 0, -1), (1, -1, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =32a(4) =147a(5) =618a(6) =2867a(7) =12862a(8) =60469a(9) =279517a(10) =1328992a(11) =6249552a(12) =29960429a(13) =142485385a(14) =687251926a(15) =3294492823a(16) =15964211851a(17) =76979686345a(18) =374373876491
External references
- oeis: A150914