T(n,k)=Number of nXk arrays of the minimum or maximum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.
A220109
T(n,k)=Number of nXk arrays of the minimum or maximum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.
Terms
- a(0) =4a(1) =16a(2) =16a(3) =56a(4) =256a(5) =56a(6) =250a(7) =4020a(8) =4020a(9) =250a(10) =984a(11) =64862a(12) =252520a(13) =64862a(14) =984a(15) =3888a(16) =1029672a(17) =16187862a(18) =16187862a(19) =1029672a(20) =3888a(21) =15798a(22) =16468836a(23) =1028824446a(24) =4160361190a(25) =1028824446a(26) =16468836a(27) =15798a(28) =63092a(29) =262860066
External references
- oeis: A220109