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Search: id:A001991
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A001991 Class numbers of quadratic fields.
(Formerly M0212 N0863)
+0
1
2, 2, 2, 2, 2, 2, 2, 2, 46, 46, 46, 46, 46, 46, 406, 718, 950, 950, 950, 1698, 1698, 1698, 1698, 1698, 3990, 3990, 3990, 53510, 77970, 89478, 89478, 89478, 89478, 89478, 89478 (list; graph; listen)
OFFSET

3,1

REFERENCES

D. H. Lehmer, E. Lehmer and D. Shanks, Integer sequences having prescribed quadratic character, Math. Comp., 24 (1970), 433-451.

LINKS

Index entries for sequences related to quadratic fields

CROSSREFS

Sequence in context: A047935 A103795 A123627 this_sequence A052298 A081412 A082863

Adjacent sequences: A001988 A001989 A001990 this_sequence A001992 A001993 A001994

KEYWORD

nonn

AUTHOR

njas

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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