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), (0, 0, 1), (0, 1, 1), (1, 1, 0), (1, 1, 1)}.
A151249
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), (0, 0, 1), (0, 1, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =79a(4) =373a(5) =1786a(6) =8659a(7) =42198a(8) =206719a(9) =1016502a(10) =5010965a(11) =24758995a(12) =122540583a(13) =607322252a(14) =3013490509a(15) =14966679229a(16) =74392292633a(17) =370020504632
External references
- oeis: A151249