T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal.
A237488
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1464a(2) =1464a(3) =8770a(4) =15898a(5) =8770a(6) =55318a(7) =180730a(8) =180730a(9) =55318a(10) =357516a(11) =2218016a(12) =3903294a(13) =2218016a(14) =357516a(15) =2371070a(16) =27849668a(17) =92508252a(18) =92508252a(19) =27849668a(20) =2371070a(21) =15989568a(22) =361041844a(23) =2218452183a(24) =4269381134a(25) =2218452183a(26) =361041844
External references
- oeis: A237488