Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
A258541
Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
Terms
- a(0) =8100a(1) =27889a(2) =57600a(3) =161604a(4) =367236a(5) =996004a(6) =2414916a(7) =6441444a(8) =16224784a(9) =42954916a(10) =110502144a(11) =291282489a(12) =756800100a(13) =1988981604a(14) =5190626116a(15) =13618189809a(16) =35608444804a(17) =93330861001a(18) =244229686416a(19) =639777619321
External references
- oeis: A258541