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, -1), (-1, -1, 0), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A150366
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, -1), (-1, -1, 0), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =94a(5) =347a(6) =1489a(7) =5866a(8) =25843a(9) =105685a(10) =473676a(11) =1986008a(12) =9007060a(13) =38447818a(14) =175896360a(15) =761051976a(16) =3505132603a(17) =15327088849a(18) =70966405272a(19) =312976866693
External references
- oeis: A150366