Stores count of strings consisting of vowels sorted lexicographically of all possible lengths
let DP = new Array ( n + 1 ) ; for ( var i = 0 ; i < DP . length ; i ++ ) { DP [ i ] = new Array ( 2 ) ; } for ( var i = 0 ; i < DP . length ; i ++ ) { for ( var j = 0 ; j < DP . length ; j ++ ) { DP [ i ] [ j ] = 0 ; } }