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), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
A151106
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), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =44a(4) =188a(5) =834a(6) =3796a(7) =17595a(8) =82652a(9) =392296a(10) =1876988a(11) =9038428a(12) =43750078a(13) =212672939a(14) =1037483310a(15) =5076179561a(16) =24898992612a(17) =122392690133a(18) =602735470493
External references
- oeis: A151106