Number of length 6+3 0..n arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.

A250392

Number of length 6+3 0..n arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.

Terms

    a(0) =6a(1) =966a(2) =26578a(3) =309452a(4) =2160160a(5) =10755158a(6) =42158796a(7) =138336744a(8) =395723154a(9) =1015071750a(10) =2382851790a(11) =5197343476a(12) =10655843900a(13) =20723014006a(14) =38504379320a(15) =68753342352a(16) =118544772606a(17) =198153311046a(18) =322179959658a(19) =510976323420

External references