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), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
A150377
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), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =96a(5) =370a(6) =1566a(7) =6489a(8) =28076a(9) =121360a(10) =532628a(11) =2351022a(12) =10460730a(13) =46813510a(14) =210658107a(15) =951491883a(16) =4316746000a(17) =19642710584a(18) =89689252555a(19) =410604172754
External references
- oeis: A150377