Number of n X 3 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two exactly once.
A268634
Number of n X 3 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two exactly once.
Terms
- a(0) =12a(1) =120a(2) =840a(3) =5178a(4) =29772a(5) =163878a(6) =875592a(7) =4578186a(8) =23548164a(9) =119570574a(10) =600870336a(11) =2993807250a(12) =14810051580a(13) =72819229974a(14) =356173467576
External references
- oeis: A268634