T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.
A251249
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.
Terms
- a(0) =75a(1) =621a(2) =621a(3) =5139a(4) =14265a(5) =5139a(6) =42525a(7) =327753a(8) =327753a(9) =42525a(10) =351891a(11) =7530633a(12) =20904689a(13) =7530633a(14) =351891a(15) =2911869a(16) =173028393a(17) =1333268433a(18) =1333268433a(19) =173028393a(20) =2911869a(21) =24095475a(22) =3975606801a(23) =85032883789a(24) =236035946835
External references
- oeis: A251249