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), (0, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 1)}.
A151138
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), (0, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =46a(4) =203a(5) =906a(6) =4155a(7) =19337a(8) =90515a(9) =427945a(10) =2036396a(11) =9723892a(12) =46659238a(13) =224685811a(14) =1084448414a(15) =5248849750a(16) =25461346103a(17) =123709074355a(18) =602154572085
External references
- oeis: A151138