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, 1), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
A150425
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, 1), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =96a(5) =395a(6) =1692a(7) =7319a(8) =32328a(9) =144775a(10) =656618a(11) =3000338a(12) =13806890a(13) =63935867a(14) =297825840a(15) =1393862673a(16) =6549176577a(17) =30879353499a(18) =146076178016a(19) =693066334340
External references
- oeis: A150425