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 78.

A031666

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 78.

Terms

    a(0) =13933a(1) =123985a(2) =124690a(3) =126106a(4) =185021a(5) =258233a(6) =260269a(7) =262313a(8) =347146a(9) =550925a(10) =553897a(11) =559865a(12) =679417a(13) =823178a(14) =953201a(15) =957109a(16) =959066a(17) =962986a(18) =964949a(19) =966914a(20) =972821a(21) =974794a(22) =1120093a(23) =1286797a(24) =1295885a(25) =1467482a(26) =1474757a(27) =1477186

External references