W(n) = R(9n-3)/(R(3)*R(3n-1)) W( 1) = 91 = 7*13 W( 2) = 90090991 = 31*2906161 W( 3) = 90090090990991 = 7*13*9901*99990001 W( 4) = 90090090090990990991 = 67*1344628210313298373 W( 5) = 90090090090090990990990991 = 7^2*13*43*127*1933*2689*459691*10838689 W( 6) = 90090090090090090990990990990991 = 613*210631*52986961*13168164561429877 W( 7) = 90090090090090090090990990990990990991 = 7*13*31*61*211*241*2161*9901*2906161*4188901*39526741 W( 8) = 90090090090090090090090990990990990990990991 = 277*203864078068831*1595352086329224644348978893 W( 9) = 90090090090090090090090090990990990990990990990991 = 7*13^2*157*6397*216451*388847808493*900900900900990990990991 W(10) = 90090090090090090090090090090990990990990990990990990991 = 4003*72559*310170251658029759045157793237339498342763245483 W(11) = 90090090090090090090090090090090990990990990990990990990990991 = 7*13*97*9901*206209*99990001*66554101249*75118313082913*9999999900000001 W(12) = 90090090090090090090090090090090090990990990990990990990990990990991 = 31*43*1933*2906161*10838689*30703738801*625437743071*57802050308786191965409441 W(13) = 90090090090090090090090090090090090090990990990990990990990990990990990991 = 7*13*21319*1458973*10749631*3931123022305129377976519*753201806271328462547977919407 W(14) = 90090090090090090090090090090090090090090990990990990990990990990990990990990991 = 1811791*626920594693*9425856976319889649*8414640003465161203119978906558054839526­493