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), (0, 1, 0), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A151075
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), (0, 1, 0), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =40a(4) =169a(5) =729a(6) =3249a(7) =14717a(8) =67436a(9) =312803a(10) =1461936a(11) =6878212a(12) =32557918a(13) =154799224a(14) =739043897a(15) =3540956927a(16) =17015609718a(17) =81988739469a(18) =395987808269
External references
- oeis: A151075