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), (-1, 1, 1), (0, 1, 1), (1, -1, 0), (1, 0, -1)}.
A149062
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), (-1, 1, 1), (0, 1, 1), (1, -1, 0), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =39a(5) =155a(6) =639a(7) =2685a(8) =11659a(9) =51415a(10) =230181a(11) =1042189a(12) =4767683a(13) =21999127a(14) =102190479a(15) =477697337a(16) =2244781469a(17) =10597607643a(18) =50235495945a(19) =238990143211
External references
- oeis: A149062