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, -1, 1), (0, 1, 0), (1, 0, 0), (1, 1, 0)}.
A151049
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, -1, 1), (0, 1, 0), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =37a(4) =140a(5) =565a(6) =2363a(7) =10081a(8) =43804a(9) =192299a(10) =856225a(11) =3855615a(12) =17502538a(13) =79999409a(14) =367600610a(15) =1698965765a(16) =7893277598a(17) =36827039911a(18) =172440669409a(19) =809974811669
External references
- oeis: A151049