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 21.
A031609
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 21.
Terms
- a(0) =1033a(1) =5674a(2) =9106a(3) =9685a(4) =13577a(5) =14045a(6) =19213a(7) =19769a(8) =20333a(9) =25189a(10) =26794a(11) =33413a(12) =33778a(13) =40361a(14) =41165a(15) =42797a(16) =43625a(17) =51517a(18) =53341a(19) =59093a(20) =59578a(21) =61538a(22) =63029a(23) =64033a(24) =69269a(25) =70321a(26) =71381a(27) =71914a(28) =72986a(29) =74066
External references
- oeis: A031609