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, 0, 1), (0, 0, -1), (1, 0, 1), (1, 1, 1)}.
A151024
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, 0, 1), (0, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =40a(4) =180a(5) =816a(6) =3792a(7) =17632a(8) =83328a(9) =395264a(10) =1885136a(11) =9029264a(12) =43422272a(13) =209338720a(14) =1011990848a(15) =4903283072a(16) =23802136448a(17) =115736418752a(18) =563644374976
External references
- oeis: A151024