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

A237182

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

Terms

    a(0) =81a(1) =402a(2) =402a(3) =2061a(4) =2700a(5) =2061a(6) =10488a(7) =18062a(8) =18062a(9) =10488a(10) =53401a(11) =122882a(12) =167387a(13) =122882a(14) =53401a(15) =271420a(16) =836966a(17) =1580672a(18) =1580672a(19) =836966a(20) =271420a(21) =1382012a(22) =5677464a(23) =15073049a(24) =21527380a(25) =15073049a(26) =5677464a(27) =1382012a(28) =7030000a(29) =38493628

External references