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, -1), (1, 1, 0)}.
A149094
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, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =32a(5) =84a(6) =346a(7) =1035a(8) =4434a(9) =14276a(10) =63150a(11) =213816a(12) =965176a(13) =3397665a(14) =15525463a(15) =56362226a(16) =259816633a(17) =966364827a(18) =4488211510a(19) =17021512470a(20) =79566536014a(21) =306669648097
External references
- oeis: A149094