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, -1, 0), (0, 1, -1), (1, 0, 1), (1, 1, 1)}.
A150737
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, -1, 0), (0, 1, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =122a(5) =516a(6) =2253a(7) =10019a(8) =45223a(9) =205633a(10) =948552a(11) =4383695a(12) =20467864a(13) =95853451a(14) =451175590a(15) =2133028680a(16) =10110239852a(17) =48104263016a(18) =229403087222
External references
- oeis: A150737