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, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150398
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, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =92a(5) =364a(6) =1489a(7) =6255a(8) =26732a(9) =116124a(10) =510652a(11) =2269052a(12) =10173797a(13) =45958102a(14) =208995286a(15) =955893438a(16) =4394326977a(17) =20293383562a(18) =94096594300a(19) =437913332281
External references
- oeis: A150398