Number of (n+1) X (6+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.

Terms

a(0) =20800a(1) =9752a(2) =3504a(3) =5036a(4) =6728a(5) =10420a(6) =14440a(7) =23148a(8) =33704a(9) =52348a(10) =72200a(11) =116316a(12) =168520a(13) =261612a(14) =361000a(15) =581580a(16) =842600a(17) =1308060a(18) =1805000a(19) =2907900a(20) =4213000a(21) =6540300a(22) =9025000a(23) =14539500a(24) =21065000a(25) =32701500a(26) =45125000a(27) =72697500a(28) =105325000