Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 51.

A031639

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 51.

Terms

    a(0) =32449a(1) =52981a(2) =54370a(3) =80777a(4) =110393a(5) =150769a(6) =151546a(7) =191258a(8) =192133a(9) =236557a(10) =238505a(11) =242425a(12) =289885a(13) =296377a(14) =348629a(15) =352178a(16) =356938a(17) =407669a(18) =411506a(19) =412789a(20) =414074a(21) =417941a(22) =420529a(23) =479593a(24) =487933a(25) =548441a(26) =554377a(27) =560345a(28) =566345a(29) =629810

External references