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), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
A151148
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), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =205a(5) =927a(6) =4237a(7) =19681a(8) =92309a(9) =436233a(10) =2073425a(11) =9901689a(12) =47489797a(13) =228532493a(14) =1102918479a(15) =5335687639a(16) =25869910029a(17) =125669892361a(18) =611494078813
External references
- oeis: A151148