|
Search: id:A001991
|
|
|
| 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.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
LINKS
|
Index entries for sequences related to quadratic fields
|
|
CROSSREFS
|
Sequence in context: A047935 A103795 A123627 this_sequence A147793 A052298 A081412
Adjacent sequences: A001988 A001989 A001990 this_sequence A001992 A001993 A001994
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
