Number of length 7+2 0..n arrays with the medians of every three consecutive terms nondecreasing.

A250146

Number of length 7+2 0..n arrays with the medians of every three consecutive terms nondecreasing.

Terms

    a(0) =180a(1) =4530a(2) =45232a(3) =274901a(4) =1219944a(5) =4350588a(6) =13201680a(7) =35373129a(8) =85849852a(9) =192208302a(10) =402420096a(11) =796122925a(12) =1500404816a(13) =2711339928a(14) =4722722400a(15) =7963669329a(16) =13047004740a(17) =20830593418a(18) =32494066704a(19) =49633671813a(20) =74378281912

External references