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, 1), (0, 1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
A150891
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, 1), (0, 1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =152a(5) =704a(6) =3326a(7) =15930a(8) =77020a(9) =374958a(10) =1834706a(11) =9012254a(12) =44402004a(13) =219279300a(14) =1084955568a(15) =5376364402a(16) =26675151192a(17) =132486601696a(18) =658580866304
External references
- oeis: A150891