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, 0, 1), (0, -1, 1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.
A150583
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, 0, 1), (0, -1, 1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =110a(5) =469a(6) =2100a(7) =9460a(8) =43662a(9) =202423a(10) =951164a(11) =4485488a(12) =21325139a(13) =101681722a(14) =487389615a(15) =2341793323a(16) =11292360471a(17) =54560203627a(18) =264296978730
External references
- oeis: A150583