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), (-1, -1, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
A151081
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), (-1, -1, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =41a(4) =170a(5) =734a(6) =3271a(7) =14737a(8) =67579a(9) =312183a(10) =1456139a(11) =6839691a(12) =32263003a(13) =153094265a(14) =729036920a(15) =3483249581a(16) =16697234320a(17) =80240947268a(18) =386535282704
External references
- oeis: A151081