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, 0), (0, 1, -1), (1, -1, 1), (1, 1, 0)}.
A149310
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, 0), (0, 1, -1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =48a(5) =175a(6) =778a(7) =3191a(8) =14580a(9) =63151a(10) =294654a(11) =1319254a(12) =6238358a(13) =28569059a(14) =136366598a(15) =634469527a(16) =3049781298a(17) =14355616375a(18) =69371945164a(19) =329453045822
External references
- oeis: A149310