Number of length n+3 0..7 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.
A249706
Number of length n+3 0..7 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.
Terms
- a(0) =904a(1) =2864a(2) =8688a(3) =24032a(4) =57912a(5) =156416a(6) =442144a(7) =1235840a(8) =3295784a(9) =8902160a(10) =24576568a(11) =68205968a(12) =186882480a(13) =511124496a(14) =1407327072a(15) =3893357456a(16) =10747255576a(17) =29617387520a(18) =81753189024a(19) =226221330256a(20) =626221254528
External references
- oeis: A249706