Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.
A205730
Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.
Terms
- a(0) =369a(1) =978a(2) =3318a(3) =9198a(4) =34674a(5) =97380a(6) =370008a(7) =1053624a(8) =4060848a(9) =11593452a(10) =44691564a(11) =127862298a(12) =493245942a(13) =1412611194a(14) =5445496374a(15) =15610049862a(16) =60135842922a(17) =172528522548a(18) =664117714260
External references
- oeis: A205730