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, 0, 1), (1, -1, -1), (1, 1, 0), (1, 1, 1)}.
A150918
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, 0, 1), (1, -1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =32a(4) =150a(5) =629a(6) =2981a(7) =13333a(8) =63815a(9) =294399a(10) =1419620a(11) =6668577a(12) =32325597a(13) =153659636a(14) =747701911a(15) =3583832819a(16) =17489677420a(17) =84342378614a(18) =412554594772
External references
- oeis: A150918