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, -1, 1), (-1, 1, -1), (0, 0, 1), (1, 0, 0)}.
A149814
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, -1, 1), (-1, 1, -1), (0, 0, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =26a(5) =71a(6) =229a(7) =758a(8) =2465a(9) =8326a(10) =28723a(11) =99984a(12) =360520a(13) =1319152a(14) =4795180a(15) =17632228a(16) =66029313a(17) =248365358a(18) =941304113a(19) =3599515826a(20) =13781394242a(21) =52987143192a(22) =205844656410a(23) =802871708059
External references
- oeis: A149814