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, 1), (-1, 0, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
A149013
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, 1), (-1, 0, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =35a(5) =116a(6) =500a(7) =1860a(8) =8288a(9) =33222a(10) =151006a(11) =634144a(12) =2927959a(13) =12686672a(14) =59289782a(15) =262829326a(16) =1239619599a(17) =5592148566a(18) =26562347627a(19) =121489768762a(20) =580326142766
External references
- oeis: A149013