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, -1), (1, -1, 0), (1, 1, 1)}.
A149704
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, -1), (1, -1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =17a(4) =69a(5) =283a(6) =1221a(7) =5331a(8) =23769a(9) =107001a(10) =487945a(11) =2243869a(12) =10383885a(13) =48373479a(14) =226576711a(15) =1065750707a(16) =5033216081a(17) =23855847143a(18) =113417165091a(19) =540703865905
External references
- oeis: A149704