Number of (n+2)X4 binary arrays with each 3X3 subblock having a positive determinant.
A186056
Number of (n+2)X4 binary arrays with each 3X3 subblock having a positive determinant.
Terms
- a(0) =267a(1) =1217a(2) =5050a(3) =18376a(4) =77987a(5) =319247a(6) =1206478a(7) =5004260a(8) =20446314a(9) =78510506a(10) =321624753a(11) =1312717589a(12) =5093522285a(13) =20696807255a(14) =84349601913a(15) =329882198919
External references
- oeis: A186056