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, 0), (0, -1, 1), (1, 1, -1), (1, 1, 0)}.
A149201
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, 0), (0, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =10a(4) =38a(5) =134a(6) =507a(7) =2018a(8) =8024a(9) =33221a(10) =138794a(11) =588023a(12) =2533091a(13) =10975240a(14) =48141523a(15) =212612970a(16) =945494118a(17) =4234748400a(18) =19059805239a(19) =86265428509a(20) =392211632290
External references
- oeis: A149201