Number of n X 2 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
A284765
Number of n X 2 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =4a(2) =14a(3) =52a(4) =206a(5) =772a(6) =2896a(7) =10996a(8) =41862a(9) =159836a(10) =612572a(11) =2354880a(12) =9076852a(13) =35073264a(14) =135823868a(15) =527012084a(16) =2048410070a(17) =7974173484a(18) =31085538148a(19) =121332433984a(20) =474123211448
External references
- oeis: A284765