T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock.
A236651
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock.
Terms
- a(0) =81a(1) =484a(2) =484a(3) =2932a(4) =4500a(5) =2932a(6) =17824a(7) =41980a(8) =41980a(9) =17824a(10) =108272a(11) =394380a(12) =608656a(13) =394380a(14) =108272a(15) =655100a(16) =3668492a(17) =8891884a(18) =8891884a(19) =3668492a(20) =655100a(21) =3970468a(22) =34234336a(23) =128476048a(24) =204824360a(25) =128476048a(26) =34234336a(27) =3970468a(28) =24093844
External references
- oeis: A236651