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), (0, 1, -1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A151124
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), (0, 1, -1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =45a(4) =194a(5) =870a(6) =3993a(7) =18631a(8) =88068a(9) =420149a(10) =2019374a(11) =9763410a(12) =47425833a(13) =231270952a(14) =1131400826a(15) =5549719306a(16) =27284114986a(17) =134394443468a(18) =663082316282
External references
- oeis: A151124