Number of (n+1) X (2+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251082
Number of (n+1) X (2+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
Terms
- a(0) =83a(1) =284a(2) =616a(3) =1306a(4) =2534a(5) =4848a(6) =9086a(7) =17102a(8) =32336a(9) =61836a(10) =119420a(11) =232882a(12) =457522a(13) =904088a(14) =1793778a(15) =3569126a(16) =7114892a(17) =14200724a(18) =28365600a(19) =56687594a(20) =113322526a(21) =226582144a(22) =453089606a(23) =906091326a(24) =1812079784a(25) =3624040028a(26) =7247941796
External references
- oeis: A251082