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, 1), (-1, 1, 0), (0, -1, 1), (1, 1, -1), (1, 1, 1)}.
A149792
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, 1), (-1, 1, 0), (0, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =83a(5) =365a(6) =1659a(7) =7589a(8) =35383a(9) =166121a(10) =785345a(11) =3735511a(12) =17858983a(13) =85677265a(14) =412450911a(15) =1991344327a(16) =9636985293a(17) =46734889957a(18) =227075089473
External references
- oeis: A149792