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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150757
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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =132a(5) =558a(6) =2640a(7) =11875a(8) =57223a(9) =265840a(10) =1294971a(11) =6133682a(12) =30085606a(13) =144312174a(14) =711154466a(15) =3441237378a(16) =17013314950a(17) =82851670157a(18) =410577191021
External references
- oeis: A150757