Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A094613
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A094613 Discriminants of real quadratic number fields with class number 4. +0
4
145, 328, 445, 505, 520, 680, 689, 777, 780, 793, 840, 876, 897, 901, 905, 924, 1020, 1045, 1096, 1105, 1145, 1160, 1164, 1221, 1288, 1292, 1313, 1320, 1365, 1480, 1560, 1640, 1677, 1736, 1740, 1745, 1752, 1820, 1848, 1885, 1932, 2005, 2040 (list; graph; listen)
OFFSET

1,1

LINKS

Eric Weisstein's World of Mathematics, ClassNumber

MATHEMATICA

Needs["NumberTheory`NumberTheoryFunctions`"] (*then*) Flatten[Position[ClassNumber/@Range[2040], 4, {1}]]

CROSSREFS

Cf. A003656, 094619, A094612, A094614.

Sequence in context: A159777 A051414 A158133 this_sequence A116208 A031702 A031600

Adjacent sequences: A094610 A094611 A094612 this_sequence A094614 A094615 A094616

KEYWORD

nonn

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), May 14, 2004

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


AT&T Labs Research