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), (0, 0, 1), (0, 1, -1), (1, 0, -1), (1, 1, 0)}.
A150342
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), (0, 0, 1), (0, 1, -1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =89a(5) =338a(6) =1379a(7) =5614a(8) =23661a(9) =100182a(10) =431677a(11) =1872775a(12) =8202961a(13) =36172424a(14) =160464569a(15) =715888025a(16) =3207758797a(17) =14437490860a(18) =65210961405a(19) =295557019945
External references
- oeis: A150342