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A051986 Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 21. 1
394, 865, 1769, 1985, 2561, 2762, 3098, 4385, 5465, 5485, 5965, 6122, 7141, 7265, 10565, 11101, 11485, 11581, 13285, 13466, 14381, 14765, 16442, 21365, 22565, 28373, 34493, 35197, 36221, 44861, 47477, 48485, 48941, 51365, 54317 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

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

LINKS

Georg Fischer, Table of n, a(n) for n = 1..59

CROSSREFS

Cf. A051966-A051989.

Sequence in context: A172710 A236234 A252691 * A223908 A251256 A270843

Adjacent sequences: A051983 A051984 A051985 * A051987 A051988 A051989

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Jan 04 2000

STATUS

approved

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Last modified February 1 05:08 EST 2023. Contains 359981 sequences. (Running on oeis4.)