login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A051987
Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 22.
1
466, 763, 771, 834, 1059, 1194, 1266, 1334, 1558, 1563, 1798, 1835, 1843, 1905, 1963, 1986, 2001, 2082, 2270, 2274, 2279, 2406, 2514, 2519, 2546, 2585, 2643, 2778, 2823, 2859, 2931, 2937, 2947, 3063, 3107, 3131, 3147, 3182, 3207, 3310
OFFSET
1,1
REFERENCES
R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A3.
LINKS
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Jan 04 2000
STATUS
approved