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, -1, 1), (-1, 1, 0), (1, 0, 0), (1, 1, -1)}.
A148059
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, -1, 1), (-1, 1, 0), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =22a(6) =71a(7) =174a(8) =653a(9) =1814a(10) =6915a(11) =20546a(12) =82095a(13) =257809a(14) =1056914a(15) =3465493a(16) =14500386a(17) =49162222a(18) =209454739a(19) =730286285a(20) =3154572233a(21) =11256937646a(22) =49204919325a(23) =179067026571a(24) =790635748409
External references
- oeis: A148059