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), (-1, 1, 1), (0, 0, 1), (1, -1, 1), (1, 0, -1)}.
A148334
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), (-1, 1, 1), (0, 0, 1), (1, -1, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =43a(6) =147a(7) =521a(8) =1941a(9) =7480a(10) =29589a(11) =119739a(12) =493859a(13) =2068429a(14) =8783152a(15) =37733105a(16) =163756225a(17) =717099427a(18) =3165207986a(19) =14069737107a(20) =62939441266a(21) =283160925349
External references
- oeis: A148334