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, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150770
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, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =30a(4) =128a(5) =551a(6) =2450a(7) =11032a(8) =50478a(9) =232937a(10) =1085177a(11) =5086575a(12) =23984271a(13) =113611413a(14) =540413923a(15) =2579476276a(16) =12350731189a(17) =59294369466a(18) =285353149406
External references
- oeis: A150770