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, 0, 1), (-1, 1, 0), (-1, 1, 1), (1, 0, 0)}.
A149082
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, 0, 1), (-1, 1, 0), (-1, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =7a(4) =30a(5) =63a(6) =291a(7) =677a(8) =3190a(9) =7867a(10) =37665a(11) =96743a(12) =468404a(13) =1239327a(14) =6036606a(15) =16329231a(16) =79972818a(17) =220188843a(18) =1082295913a(19) =3022406055a(20) =14897584040a(21) =42092366675a(22) =207957460276a(23) =593392837453
External references
- oeis: A149082