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, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
A151149
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, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =205a(5) =927a(6) =4255a(7) =19801a(8) =92979a(9) =439999a(10) =2094023a(11) =10013335a(12) =48069797a(13) =231510505a(14) =1118100716a(15) =5412834139a(16) =26258649825a(17) =127617162326a(18) =621219944598
External references
- oeis: A151149