Numerators of continued fraction convergents to sqrt(640).

Terms

a(0) =25a(1) =76a(2) =177a(3) =253a(4) =1189a(5) =1442a(6) =17051a(7) =18493a(8) =91023a(9) =109516a(10) =310055a(11) =1039681a(12) =52294105a(13) =157921996a(14) =368138097a(15) =526060093a(16) =2472378469a(17) =2998438562a(18) =35455202651a(19) =38453641213a(20) =189269767503a(21) =227723408716a(22) =644716584935