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, 0), (1, 1, 1)}.
A150698
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, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =120a(5) =445a(6) =2124a(7) =8376a(8) =40551a(9) =165818a(10) =809755a(11) =3391935a(12) =16651254a(13) =70961718a(14) =349588037a(15) =1509317512a(16) =7454453718a(17) =32513831916a(18) =160886810618a(19) =707534311251
External references
- oeis: A150698