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), (0, 0, 1), (0, 1, 1), (1, 0, -1)}.
A150037
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), (0, 0, 1), (0, 1, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =17a(4) =64a(5) =227a(6) =871a(7) =3349a(8) =13604a(9) =54859a(10) =226053a(11) =944291a(12) =3996053a(13) =16947058a(14) =72706281a(15) =314383547a(16) =1365737918a(17) =5956847932a(18) =26165136183a(19) =115396882757a(20) =510350828873
External references
- oeis: A150037