The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A344408 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A344408

Positive discriminants of orders with class number 2.
(history; published version)

#13 by Joerg Arndt at Tue May 18 04:07:41 EDT 2021

STATUS

proposed

approved

#12 by Jianing Song at Tue May 18 03:47:30 EDT 2021

STATUS

editing

proposed

#11 by Jianing Song at Tue May 18 03:46:43 EDT 2021

LINKS

Jianing Song, <a href="/A344408/b344408.txt">Table of n, a(n) for n = 1..10001</a>

STATUS

approved

editing

#10 by Peter Luschny at Mon May 17 14:58:44 EDT 2021

STATUS

reviewed

approved

#9 by Joerg Arndt at Mon May 17 10:01:21 EDT 2021

STATUS

proposed

reviewed

#8 by Jianing Song at Mon May 17 09:54:51 EDT 2021

STATUS

editing

proposed

#7 by Jianing Song at Mon May 17 09:54:46 EDT 2021

COMMENTS

Also positive discriminants of orders with class group isomorphic to C_2.

#6 by Jianing Song at Mon May 17 09:53:49 EDT 2021

CROSSREFS

Cf. A322710 (the negative discriminant case), A094619.

#5 by Jianing Song at Mon May 17 09:53:14 EDT 2021

CROSSREFS

Cf. A133315, (positive discriminants of orders with class number 1), this sequence, (class number 2), A344409 (class number 3).

Cf. A322710 (the negative discriminant case).

#4 by Jianing Song at Mon May 17 07:21:43 EDT 2021

COMMENTS

The fundamental terms are listed in A094619.