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, 0, -1), (0, 1, 1), (1, 1, 1)}.
A150983
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, 0, -1), (0, 1, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =37a(4) =159a(5) =718a(6) =3291a(7) =15204a(8) =71157a(9) =336016a(10) =1594541a(11) =7604721a(12) =36443467a(13) =175245232a(14) =845045739a(15) =4085978081a(16) =19802983411a(17) =96159057034a(18) =467735169447
External references
- oeis: A150983