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), (0, 1, -1), (1, 0, -1), (1, 0, 1)}.
A149101
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), (0, 1, -1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =33a(5) =96a(6) =356a(7) =1247a(8) =4617a(9) =17230a(10) =65647a(11) =251591a(12) =984729a(13) =3854358a(14) =15281621a(15) =61040928a(16) =244814968a(17) =988998892a(18) =4015430769a(19) =16364141052a(20) =67033128208a(21) =275456059076
External references
- oeis: A149101