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), (0, 1, 1), (1, 0, 0)}.
A151040
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), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =129a(5) =501a(6) =2078a(7) =8801a(8) =36943a(9) =160485a(10) =704591a(11) =3069821a(12) =13661138a(13) =61186869a(14) =272378367a(15) =1230330551a(16) =5581589774a(17) =25197063385a(18) =114975285714a(19) =526286613363
External references
- oeis: A151040