k[1] = 49/100
k[2] = 33/4000
k[3] = 49/100
k[4] = 39/1000
k[5] = 49/100
k[6] = 51/20000
k[7] = 1/20
k[8] = 57/200
k[9] = 1539/40000
k[10] = 1000
k[11] = 161748444208580999830987622553/625000000000000000000000000000000000000
k[12] = 140768899397323707598838310717/312500000000000000000000000000000000000
k[13] = 307486018809704269108625487579/1250000000000000000000000000000000000000
k[14] = 419330357910815252818554005511/1250000000000000000000000000000000000000
k[15] = 2514875231277655924058084781/125000000000000000000000000000000000000
k[16] = 39140897525066497167566173629/156250000000000000000000000000000000000
k[17] = 1097138525216929790515637871/62500000000000000000000000000000000000
k[18] = 7804030852225624930379480553/250000000000000000000000000000000000000