T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock.

A236588

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock.

Terms

    a(0) =256a(1) =2858a(2) =2858a(3) =31944a(4) =69766a(5) =31944a(6) =358178a(7) =1705350a(8) =1705350a(9) =358178a(10) =4013896a(11) =41837888a(12) =91575854a(13) =41837888a(14) =4013896a(15) =44966244a(16) =1023837022a(17) =4933946082a(18) =4933946082a(19) =1023837022a(20) =44966244a(21) =503819820a(22) =25082040726a(23) =264737751595

External references