Denominators of continued fraction convergents to sqrt(21).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =7a(5) =12a(6) =103a(7) =115a(8) =218a(9) =551a(10) =769a(11) =1320a(12) =11329a(13) =12649a(14) =23978a(15) =60605a(16) =84583a(17) =145188a(18) =1246087a(19) =1391275a(20) =2637362a(21) =6665999a(22) =9303361a(23) =15969360a(24) =137058241a(25) =153027601a(26) =290085842a(27) =733199285a(28) =1023285127