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, 0, 0), (0, -1, 0), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
A150397
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, 0, 0), (0, -1, 0), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =92a(5) =361a(6) =1483a(7) =6185a(8) =26481a(9) =114573a(10) =503905a(11) =2233781a(12) =10013112a(13) =45158157a(14) =205304420a(15) =937891797a(16) =4310652912a(17) =19889898318a(18) =92209982267a(19) =428874045477
External references
- oeis: A150397