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, 0), (-1, 1, 0), (1, 0, -1), (1, 1, 0)}.
A149097
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, 0), (-1, 1, 0), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =33a(5) =85a(6) =369a(7) =1079a(8) =4811a(9) =15263a(10) =69320a(11) =232480a(12) =1069395a(13) =3735813a(14) =17351692a(15) =62541448a(16) =292641635a(17) =1081249221a(18) =5089473600a(19) =19187812058a(20) =90753730279a(21) =347934682697
External references
- oeis: A149097