Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,5,3,0,1,1,0 for x=0,1,2,3,4,5,6.
A197921
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,5,3,0,1,1,0 for x=0,1,2,3,4,5,6.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =34a(4) =387a(5) =7146a(6) =271266a(7) =17975058a(8) =2117012924a(9) =449079964221
External references
- oeis: A197921