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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 1)}.
A150892
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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =153a(5) =704a(6) =3315a(7) =15792a(8) =75956a(9) =367912a(10) =1791757a(11) =8761636a(12) =42987377a(13) =211475259a(14) =1042612240a(15) =5149530008a(16) =25472289092a(17) =126159248997a(18) =625514850291
External references
- oeis: A150892