Number of paths from (0,0,0) to (n,n,n) avoiding 3 or more consecutive right steps, 3 or more consecutive up steps, and 3 or more consecutive away steps.

A247150

Number of paths from (0,0,0) to (n,n,n) avoiding 3 or more consecutive right steps, 3 or more consecutive up steps, and 3 or more consecutive away steps.

Terms

    a(0) =1a(1) =6a(2) =90a(3) =1314a(4) =21084a(5) =353772a(6) =6128208a(7) =108606408a(8) =1958248980a(9) =35787633828a(10) =661145207064

External references