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, 0, 0), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150468
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, 0, 0), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =98a(5) =403a(6) =1706a(7) =7411a(8) =32773a(9) =147069a(10) =667614a(11) =3059977a(12) =14137850a(13) =65761715a(14) =307668121a(15) =1446654008a(16) =6831896530a(17) =32387869379a(18) =154062950370a(19) =735065790219
External references
- oeis: A150468