public static void main ( String [ ] args ) {
  final long DIV = 1000000007 ;
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  long [ ] a = new long [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    a [ i ] = sc . nextLong ( ) ;
  }
  sc . close ( ) ;
  long [ ] p = new long [ n ] ;
  long [ ] sump = new long [ n + 1 ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    p [ i ] = inverseElement ( i + 1 , DIV ) ;
    sump [ i + 1 ] = sump [ i ] + p [ i ] ;
    sump [ i + 1 ] %= DIV ;
  }
  long ans = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    ans += a [ i ] * ( sump [ i - 0 + 1 ] + sump [ n - i ] - p [ 0 ] ) ;
    if ( ans < 0 ) ans += DIV * DIV ;
    if ( ans > 0 ) ans %= DIV ;
  }
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    ans *= ( i + 1 ) ;
    ans %= DIV ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { final long DIV = 1000000007 ; Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; long [ ] a = new long [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = sc . nextLong ( ) ; } sc . close ( ) ; long [ ] p = new long [ n ] ; long [ ] sump = new long [ n + 1 ] ; for ( int i = 0 ; i < n ; i ++ ) { p [ i ] = inverseElement ( i + 1 , DIV ) ; sump [ i + 1 ] = sump [ i ] + p [ i ] ; sump [ i + 1 ] %= DIV ; } long ans = 0 ; for ( int i = 0 ; i < n ; i ++ ) { ans += a [ i ] * ( sump [ i - 0 + 1 ] + sump [ n - i ] - p [ 0 ] ) ; if ( ans < 0 ) ans += DIV * DIV ; if ( ans > 0 ) ans %= DIV ; } for ( int i = 0 ; i < n ; i ++ ) { ans *= ( i + 1 ) ; ans %= DIV ; } System . out . println ( ans ) ; }
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