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), (0, 1, 1), (1, 1, -1), (1, 1, 1)}.
A151007
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), (0, 1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =179a(5) =837a(6) =4032a(7) =19449a(8) =95025a(9) =464623a(10) =2287118a(11) =11267034a(12) =55704847a(13) =275630074a(14) =1366658295a(15) =6780839615a(16) =33688009846a(17) =167454085841a(18) =833090376329
External references
- oeis: A151007