Number of 5Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
A269056
Number of 5Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
Terms
- a(0) =243a(1) =2430a(2) =17346a(3) =183072a(4) =1643376a(5) =15547380a(6) =140497512a(7) =1273499256a(8) =11354964888a(9) =100764874440a(10) =886829123676
External references
- oeis: A269056