Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,5,0,2,0,1,0 for x=0,1,2,3,4,5,6.

A203121

Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,5,0,2,0,1,0 for x=0,1,2,3,4,5,6.

Terms

    a(0) =1a(1) =4a(2) =15a(3) =82a(4) =945a(5) =15723a(6) =451445a(7) =21871311a(8) =1814656584a(9) =255989384470

External references