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, 0, 0), (1, 1, -1), (1, 1, 0)}.
A150380
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, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =96a(5) =370a(6) =1649a(7) =6853a(8) =31452a(9) =136477a(10) =637326a(11) =2844663a(12) =13440854a(13) =61193764a(14) =291569929a(15) =1346960293a(16) =6458143571a(17) =30168044434a(18) =145347894835a(19) =684914837573
External references
- oeis: A150380