T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements.
A251308
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements.
Terms
- a(0) =196a(1) =2292a(2) =2292a(3) =26664a(4) =82241a(5) =26664a(6) =310224a(7) =2986712a(8) =2986712a(9) =310224a(10) =3609989a(11) =108857571a(12) =338614056a(13) =108857571a(14) =3609989a(15) =42010273a(16) =3969434142a(17) =38343620608a(18) =38343620608a(19) =3969434142a(20) =42010273a(21) =488885832a(22) =144740268503
External references
- oeis: A251308