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, 1), (0, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, -1)}.
A150096
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, 1), (0, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =19a(4) =67a(5) =245a(6) =943a(7) =3733a(8) =15148a(9) =62691a(10) =263890a(11) =1125435a(12) =4858228a(13) =21183643a(14) =93173701a(15) =413028526a(16) =1843540504a(17) =8278392131a(18) =37380361777a(19) =169626259309a(20) =773179620400
External references
- oeis: A150096