Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.
A207712
Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =6a(1) =36a(2) =114a(3) =387a(4) =1414a(5) =5302a(6) =20265a(7) =78120a(8) =302850a(9) =1177545a(10) =4587102a(11) =17888094a(12) =69803695a(13) =272499292a(14) =1064042682a(15) =4155446955a(16) =16229927982a(17) =63392825886a(18) =247616093433a(19) =967223892240
External references
- oeis: A207712