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), (-1, 0, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
A149051
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), (-1, 0, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =39a(5) =151a(6) =635a(7) =2658a(8) =11572a(9) =50877a(10) =227745a(11) =1027822a(12) =4690045a(13) =21555194a(14) =99723136a(15) =463989132a(16) =2170140534a(17) =10192764711a(18) =48060915369a(19) =227407643656
External references
- oeis: A149051