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), (0, 0, 1), (1, 0, 0), (1, 1, 0)}.
A151099
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), (0, 0, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =181a(5) =787a(6) =3491a(7) =15766a(8) =72213a(9) =333972a(10) =1556483a(11) =7305176a(12) =34479175a(13) =163466387a(14) =778101574a(15) =3716946760a(16) =17808521929a(17) =85545387623a(18) =411903327431
External references
- oeis: A151099