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, -1), (1, 0, 0), (1, 0, 1)}.
A150394
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, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =90a(5) =361a(6) =1472a(7) =6245a(8) =26939a(9) =118110a(10) =526023a(11) =2364735a(12) =10743727a(13) =49189562a(14) =226760291a(15) =1051920466a(16) =4904402618a(17) =22975630140a(18) =108072516317a(19) =510214440308
External references
- oeis: A150394