Numbers k such that the period of the continued fraction for sqrt(k) contains at least two 1's.

Terms

a(0) =7a(1) =13a(2) =14a(3) =19a(4) =21a(5) =22a(6) =23a(7) =29a(8) =31a(9) =32a(10) =33a(11) =34a(12) =43a(13) =44a(14) =45a(15) =46a(16) =47a(17) =52a(18) =53a(19) =54a(20) =57a(21) =58a(22) =59a(23) =60a(24) =61a(25) =62a(26) =67a(27) =69a(28) =70a(29) =71