Number of length-4 0..n arrays with no repeated value greater than or equal to the previous repeated value.

A269410

Number of length-4 0..n arrays with no repeated value greater than or equal to the previous repeated value.

Terms

    a(0) =9a(1) =63a(2) =222a(3) =570a(4) =1215a(5) =2289a(6) =3948a(7) =6372a(8) =9765a(9) =14355a(10) =20394a(11) =28158a(12) =37947a(13) =50085a(14) =64920a(15) =82824a(16) =104193a(17) =129447a(18) =159030a(19) =193410a(20) =233079a(21) =278553a(22) =330372a(23) =389100a(24) =455325a(25) =529659a(26) =612738a(27) =705222a(28) =807795a(29) =921165

External references