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 87.

A031675

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 87.

Terms

    a(0) =94298a(1) =153745a(2) =155317a(3) =156106a(4) =430561a(5) =434506a(6) =547889a(7) =550853a(8) =555314a(9) =689261a(10) =692585a(11) =695917a(12) =839497a(13) =846841a(14) =1010554a(15) =1014578a(16) =1184369a(17) =1190906a(18) =1193089a(19) =1195274a(20) =1201841a(21) =1204034a(22) =1206229a(23) =1208426a(24) =1388413a(25) =1603597a(26) =1608665

External references