T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock.

A235902

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock.

Terms

    a(0) =33a(1) =125a(2) =125a(3) =473a(4) =641a(5) =473a(6) =1797a(7) =3265a(8) =3265a(9) =1797a(10) =6849a(11) =17001a(12) =21697a(13) =17001a(14) =6849a(15) =26189a(16) =89857a(17) =148945a(18) =148945a(19) =89857a(20) =26189a(21) =100457a(22) =482809a(23) =1030145a(24) =1384257a(25) =1030145a(26) =482809a(27) =100457a(28) =386517a(29) =2633969

External references