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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A150567
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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =107a(5) =457a(6) =2016a(7) =9065a(8) =41424a(9) =191529a(10) =894019a(11) =4204565a(12) =19897098a(13) =94641154a(14) =452107980a(15) =2167676408a(16) =10425903303a(17) =50282484818a(18) =243082789531
External references
- oeis: A150567