Number of length-5 0..n arrays with no repeated value greater than the previous repeated value.

Terms

a(0) =28a(1) =222a(2) =964a(3) =2995a(4) =7536a(5) =16408a(6) =32152a(7) =58149a(8) =98740a(9) =159346a(10) =246588a(11) =368407a(12) =534184a(13) =754860a(14) =1043056a(15) =1413193a(16) =1881612a(17) =2466694a(18) =3188980a(19) =4071291a(20) =5138848a(21) =6419392a(22) =7943304a(23) =9743725a(24) =11856676a(25) =14321178a(26) =17179372a(27) =20476639a(28) =24261720