Number of (n+1) X (4+1) 0..3 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock.
A235889
Number of (n+1) X (4+1) 0..3 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock.
Terms
- a(0) =1216a(1) =1624a(2) =2536a(3) =4744a(4) =10696a(5) =28744a(6) =89416a(7) =309064a(8) =1141576a(9) =4379464a(10) =17146696a(11) =67846984a(12) =269910856a(13) =1076691784a(14) =4300866376a(15) =17191666504a(16) =68743070536a(17) =274925093704
External references
- oeis: A235889