1/12 the number of (n+1) X 6 0..5 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease, and at least two adjacent blocks having the same increasing direction.
A183725
1/12 the number of (n+1) X 6 0..5 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease, and at least two adjacent blocks having the same increasing direction.
Terms
- a(0) =537a(1) =4170a(2) =30939a(3) =272215a(4) =3723606a(5) =112949014a(6) =4858574535a(7) =221403152762
External references
- oeis: A183725