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, 1), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.
A149305
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, 1), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =48a(5) =157a(6) =707a(7) =2547a(8) =11728a(9) =44793a(10) =209515a(11) =830425a(12) =3928512a(13) =15975975a(14) =76204982a(15) =315911451a(16) =1516208552a(17) =6380856199a(18) =30770097293a(19) =131072626339a(20) =634440420834
External references
- oeis: A149305