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A005472
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Class numbers of cubic fields.
(Formerly M3291)
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0
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1, 1, 1, 1, 1, 1, 1, 4, 7, 4, 4, 4, 7, 4, 13, 7, 19, 7, 7, 7, 19, 19, 19, 16, 31, 19, 28, 19, 49, 31, 28, 31, 64, 43, 37, 127, 61, 52, 52, 52, 49, 100, 37, 112, 64, 67, 61, 76, 61, 76, 61, 61, 112
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,8
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REFERENCES
| D. Shanks, The simplest cubic fields, Math. Comp., 28 (1974), 1137-1152.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A020803 A019626 A203137 * A111522 A019735 A202501
Adjacent sequences: A005469 A005470 A005471 * A005473 A005474 A005475
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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