Number of (n+2) X (2+2) 0..1 arrays with every 3 X 3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254547
Number of (n+2) X (2+2) 0..1 arrays with every 3 X 3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2696a(1) =9292a(2) =39661a(3) =128366a(4) =443179a(5) =1412248a(6) =4537801a(7) =14148124a(8) =44000373a(9) =134814295a(10) =412099128a(11) =1251977561a(12) =3797440579a(13) =11489665801a(14) =34729306703a(15) =104857254464a(16) =316408018704a(17) =954240020343
External references
- oeis: A254547