Number of arrays of the median of three adjacent elements of some length-6 0..n array.

Terms

a(0) =16a(1) =77a(2) =232a(3) =545a(4) =1096a(5) =1981a(6) =3312a(7) =5217a(8) =7840a(9) =11341a(10) =15896a(11) =21697a(12) =28952a(13) =37885a(14) =48736a(15) =61761a(16) =77232a(17) =95437a(18) =116680a(19) =141281a(20) =169576a(21) =201917a(22) =238672a(23) =280225a(24) =326976a(25) =379341a(26) =437752a(27) =502657a(28) =574520a(29) =653821