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, 0, 1), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150693
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, 0, 1), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =118a(5) =438a(6) =2078a(7) =8209a(8) =39754a(9) =162831a(10) =797320a(11) =3344263a(12) =16483408a(13) =70313101a(14) =348008609a(15) =1503387856a(16) =7461490857a(17) =32553374801a(18) =161874095473a(19) =711874224388
External references
- oeis: A150693