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, 1, 0), (1, -1, 0), (1, 0, 1)}.
A150191
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, 1, 0), (1, -1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =78a(5) =304a(6) =1231a(7) =5125a(8) =21763a(9) =93925a(10) =410918a(11) =1817984a(12) =8119903a(13) =36558593a(14) =165753451a(15) =756139942a(16) =3468044808a(17) =15982873453a(18) =73974648811a(19) =343704693702
External references
- oeis: A150191