Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
A257358
Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
Terms
- a(0) =45684a(1) =53824a(2) =112236a(3) =246016a(4) =482560a(5) =1196836a(6) =2980712a(7) =6240004a(8) =12771684a(9) =30294016a(10) =73190688a(11) =157101156a(12) =333866808a(13) =779191396a(14) =1825996900a(15) =3991206976a(16) =8669972808a(17) =19918805956a(18) =45934641144a(19) =101485570624a(20) =223394526672
External references
- oeis: A257358