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, 0), (0, -1, 0), (0, 0, 1), (0, 1, -1), (1, 1, 1)}.
A150865
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, 0), (0, -1, 0), (0, 0, 1), (0, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =142a(5) =632a(6) =2874a(7) =13261a(8) =61878a(9) =291208a(10) =1379799a(11) =6574001a(12) =31463684a(13) =151159848a(14) =728552615a(15) =3521125079a(16) =17058377673a(17) =82812810122a(18) =402765154398
External references
- oeis: A150865