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), (0, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149183
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), (0, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =10a(4) =36a(5) =121a(6) =453a(7) =1709a(8) =6684a(9) =26792a(10) =108974a(11) =451733a(12) =1896435a(13) =8049408a(14) =34572095a(15) =149585493a(16) =653235229a(17) =2871174867a(18) =12703513601a(19) =56541406046a(20) =252924953390
External references
- oeis: A149183