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, 0), (1, 1, 1)}.
A150477
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, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =99a(5) =408a(6) =1743a(7) =7592a(8) =33719a(9) =151442a(10) =687913a(11) =3151179a(12) =14538075a(13) =67481244a(14) =314877361a(15) =1475843667a(16) =6945055325a(17) =32796434702a(18) =155356830111a(19) =737985256349
External references
- oeis: A150477