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, 0, 1), (1, -1, 1), (1, 0, 0)}.
A149832
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, 0, 1), (1, -1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =28a(5) =87a(6) =295a(7) =1025a(8) =3668a(9) =13505a(10) =50939a(11) =195811a(12) =765060a(13) =3032505a(14) =12164349a(15) =49338483a(16) =202003995a(17) =834137367a(18) =3470745959a(19) =14540711868a(20) =61299117863a(21) =259882257795
External references
- oeis: A149832