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), (0, 0, 1), (0, 1, 0), (1, 1, -1), (1, 1, 0)}.
A151105
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), (0, 0, 1), (0, 1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =44a(4) =185a(5) =804a(6) =3576a(7) =16179a(8) =74162a(9) =343463a(10) =1603908a(11) =7541122a(12) =35658174a(13) =169421084a(14) =808274631a(15) =3869817810a(16) =18585058316a(17) =89498454123a(18) =432024934133
External references
- oeis: A151105