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, 0, 0), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
A150405
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, 0, 0), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =93a(5) =372a(6) =1555a(7) =6639a(8) =29047a(9) =128673a(10) =579322a(11) =2629721a(12) =12071820a(13) =55750186a(14) =259530711a(15) =1213806369a(16) =5710399882a(17) =26963879156a(18) =127893112372a(19) =608414365491
External references
- oeis: A150405