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, 0, 1), (0, 1, 0), (1, -1, 0), (1, 1, -1)}.
A148196
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, 0, 1), (0, 1, 0), (1, -1, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =33a(6) =103a(7) =341a(8) =1180a(9) =4238a(10) =15559a(11) =59000a(12) =228138a(13) =899193a(14) =3600197a(15) =14613307a(16) =60110586a(17) =249975610a(18) =1050141697a(19) =4450881876a(20) =19018293897a(21) =81879346052a(22) =354908343163
External references
- oeis: A148196