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Write fundamental unit for real quadratic field of discriminant n as x + y*omega; sequence gives values of x for n == 1 mod 4.
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%I #9 Apr 14 2019 10:52:48

%S 0,1,3,2,2,19,5,27,3,131,17,7,11,943,4,4,447,13,5035,9,37,118,703,

%T 15371,79,1595,87,11,28,98,10847,6,6,57731,604,63,1637147,13,478763,

%U 20,43331,34,3583111,7,7,21639,36,66436843,8011739,872,15,5699,77

%N Write fundamental unit for real quadratic field of discriminant n as x + y*omega; sequence gives values of x for n == 1 mod 4.

%C Entries are indexed by values of n from A039955.

%D R. A. Mollin, Quadratics, CRC Press, 1996, Tables B1-B3.

%H S. R. Finch, <a href="http://www.people.fas.harvard.edu/~sfinch/">Class number theory</a>

%H Steven R. Finch, <a href="/A000924/a000924.pdf">Class number theory</a> [Cached copy, with permission of the author]

%Y Cf. A053370-A053375.

%K nonn,easy,nice

%O 0,3

%A _N. J. A. Sloane_, Jan 06 2000