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

A237481

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

Terms

    a(0) =81a(1) =331a(2) =331a(3) =1337a(4) =2529a(5) =1337a(6) =5819a(7) =19175a(8) =19175a(9) =5819a(10) =25665a(11) =160005a(12) =273756a(13) =160005a(14) =25665a(15) =116187a(16) =1361797a(17) =4384979a(18) =4384979a(19) =1361797a(20) =116187a(21) =532185a(22) =11938523a(23) =71061267a(24) =135347721a(25) =71061267a(26) =11938523a(27) =532185a(28) =2467403a(29) =105900839

External references