Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254807
Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =47816a(1) =132639a(2) =351264a(3) =1075560a(4) =3330874a(5) =11202222a(6) =34896603a(7) =109801804a(8) =322420719a(9) =973698499a(10) =2844922735a(11) =8427616743a(12) =24723378838a(13) =73556785226a(14) =220143127739a(15) =664857332766
External references
- oeis: A254807