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, 1, -1), (-1, 1, 1), (1, 0, 0), (1, 1, 1)}.
A150706
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, 1, -1), (-1, 1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =122a(5) =452a(6) =2190a(7) =8624a(8) =42322a(9) =172766a(10) =853942a(11) =3570214a(12) =17715918a(13) =75343826a(14) =374745869a(15) =1614450056a(16) =8042278931a(17) =35000131710a(18) =174528508501a(19) =765805575596
External references
- oeis: A150706