A051971 - OEIS

%I #7 Sep 21 2021 06:13:21

%S 70,105,111,114,178,183,187,267,273,303,371,374,407,418,470,498,518,

%T 545,551,590,602,618,642,803,805,822,923,1005,1007,1034,1118,1167,

%U 1173,1178,1202,1581,1605,1623,1653,1707,1749,1790,2103,2109,2147

%N Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 6.

%D R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A3.

%H Georg Fischer, <a href="/A051971/b051971.txt">Table of n, a(n) for n = 1..79</a>

%Y Cf. A051966-A051989.

%K nonn,fini,full

%O 1,1

%A _N. J. A. Sloane_, Jan 04 2000