T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise.
A235582
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise.
Terms
- a(0) =256a(1) =2896a(2) =2896a(3) =29902a(4) =100653a(5) =29902a(6) =283672a(7) =3187679a(8) =3187679a(9) =283672a(10) =2573798a(11) =88558785a(12) =344369103a(13) =88558785a(14) =2573798a(15) =22515040a(16) =2266703217a(17) =32581688349a(18) =32581688349a(19) =2266703217a(20) =22515040a(21) =192101098a(22) =53743314489
External references
- oeis: A235582