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, 1), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
A150448
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, 1), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =103a(5) =416a(6) =1902a(7) =8283a(8) =39070a(9) =177344a(10) =851579a(11) =3965436a(12) =19254227a(13) =91187768a(14) =446032075a(15) =2137425882a(16) =10508325562a(17) =50787684839a(18) =250604293372
External references
- oeis: A150448