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 89.

A031677

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 89.

Terms

    a(0) =163297a(1) =240221a(2) =242185a(3) =244157a(4) =338893a(5) =454501a(6) =573338a(7) =577889a(8) =716077a(9) =726265a(10) =891577a(11) =1051154a(12) =1065553a(13) =1067618a(14) =1239394a(15) =1246081a(16) =1248314a(17) =1250549a(18) =1257266a(19) =1259509a(20) =1261754a(21) =1264001a(22) =1445533a(23) =1459993a(24) =1464829a(25) =1680457a(26) =1685645

External references