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, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A150898
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, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =157a(5) =740a(6) =3559a(7) =17279a(8) =84560a(9) =415909a(10) =2053550a(11) =10167290a(12) =50445068a(13) =250679582a(14) =1247241773a(15) =6211477817a(16) =30957382262a(17) =154379894612a(18) =770234085562
External references
- oeis: A150898