Number of n X 2 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
A269091
Number of n X 2 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =4a(1) =96a(2) =1152a(3) =11424a(4) =103488a(5) =889056a(6) =7375872a(7) =59698464a(8) =474360768a(9) =3715826016a(10) =28777886592a(11) =220814937504
External references
- oeis: A269091