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, 0), (-1, 0, -1), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
A151214
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, 0), (-1, 0, -1), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =55a(4) =257a(5) =1173a(6) =5641a(7) =26589a(8) =129649a(9) =621779a(10) =3055365a(11) =14808965a(12) =73117707a(13) =356884157a(14) =1767623943a(15) =8670146633a(16) =43036138213a(17) =211849042763
External references
- oeis: A151214